Currently the variables set in vcbuild.bat are mostly global and
escape/leak out into the calling process. For example, running
vcbuild.bat test and then echoing the config variable gives:

vcbuild.bat test
...
echo %config%
Release

After this change the same command give:
vcbuild.bat test
...
echo %config%
%config%

PR-URL: nodejs#15754
Reviewed-By: James M Snell <jasnell@gmail.com>

In code example `vm.createContext` called with new operator by mistake.
It is not a constructor.

PR-URL: nodejs#16059
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Minwoo Jung <minwoo@nodesource.com>

While VM module's columnOffset option does succeed in applying an offset
to the column number in the stack trace, the wavy diagram printed does
not account for potential offsets, resulting in erroneous location of
`^` in the first line of the script.

Before:

```
> vm.runInThisContext('throw new Error()', { columnOffset: 5 })
evalmachine.<anonymous>:1
throw new Error()
     ^

Error
    at evalmachine.<anonymous>:1:12
    at ContextifyScript.Script.runInThisContext (vm.js:44:33)
    at Object.runInThisContext (vm.js:116:38)
```

After:

```
> vm.runInThisContext('throw new Error()', { columnOffset: 5 })
evalmachine.<anonymous>:1
throw new Error()
^

Error
    at evalmachine.<anonymous>:1:12
    at ContextifyScript.Script.runInThisContext (vm.js:50:33)
    at Object.runInThisContext (vm.js:139:38)
    at repl:1:4
```

PR-URL: nodejs#15771
Refs: jsdom/jsdom#2003
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>

PR-URL: nodejs#16014
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>

There are no longer files in the repository that use the `.markdown`
extension so remove mention of them.

PR-URL: nodejs#15786
Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com>
Reviewed-By: Lance Ball <lball@redhat.com>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>

PR-URL: nodejs#15978
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>

PR-URL: nodejs#15974
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

PR-URL: nodejs#15972
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

Updated console example to follow style of rest of the examples

PR-URL: nodejs#15962
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Michaël Zasso <targos@protonmail.com>

PR-URL: nodejs#15957
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

PR-URL: nodejs#15956
Reviewed-By: Daijiro Wachi <daijiro.wachi@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

PR-URL: nodejs#15954
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>

PR-URL: nodejs#15937
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>

Assertions will now print the values that caused the assertions
to fail.

PR-URL: nodejs#15928
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

Added interpolated strings to display the error value

PR-URL: nodejs#15926
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

This commit makes understanding assertion failures easier by
displaying the values that failed the assertion.

PR-URL: nodejs#15883
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>

PR-URL: nodejs#15911
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

Adding back the changes made by commit# 791d560, that suggests running
macosx-firewall.sh script after bulid step. These changes were deleted
by commit# fc102d0, but they are still applicable.

PR-URL: nodejs#15829
Reviewed-By: Ryan Graham <r.m.graham@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>

PR-URL: nodejs#15921
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

PR-URL: nodejs#15920
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

Add result to part of assert message.

PR-URL: nodejs#15918
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

PR-URL: nodejs#15915
Reviewed-By: Daijiro Wachi <daijiro.wachi@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

PR-URL: nodejs#15914
Reviewed-By: Daijiro Wachi <daijiro.wachi@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

PR-URL: nodejs#15910
Reviewed-By: Daijiro Wachi <daijiro.wachi@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

PR-URL: nodejs#15944
Reviewed-By: Lance Ball <lball@redhat.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

PR-URL: nodejs#15906
Reviewed-By: Daijiro Wachi <daijiro.wachi@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

remove third argument `0` from calls to `assert.deepStrictEqual`

PR-URL: nodejs#15896
Reviewed-By: Daijiro Wachi <daijiro.wachi@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

PR-URL: nodejs#16039
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Yuta Hiroto <hello@about-hiroppy.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

PR-URL: nodejs#16046
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Lance Ball <lball@redhat.com>

PR-URL: nodejs#16079
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Minwoo Jung <minwoo@nodesource.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Yuta Hiroto <hello@about-hiroppy.com>

Adds a new `../common/fixtures' module to begin normalizing
`test/fixtures` use. Our test code is a bit inconsistent with
regards to use of the fixtures directory. Some code uses
`path.join()`, some code uses string concats, some other
code uses template strings, etc. In mnay cases, significant
duplication of code is seen when accessing fixture files, etc.

This updates many (but by no means all) of the tests in the
test suite to use the new consistent API. There are still
many more to update, which would make an excelent Code-n-Learn
exercise.

Backport-PR-URL: #16265
PR-URL: #14332
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Michaël Zasso <targos@protonmail.com>

Adds a new `../common/fixtures' module to begin normalizing
`test/fixtures` use. Our test code is a bit inconsistent with
regards to use of the fixtures directory. Some code uses
`path.join()`, some code uses string concats, some other
code uses template strings, etc. In mnay cases, significant
duplication of code is seen when accessing fixture files, etc.

This updates many (but by no means all) of the tests in the
test suite to use the new consistent API. There are still
many more to update, which would make an excelent Code-n-Learn
exercise.

Backport-PR-URL: #16265
PR-URL: #14332
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Michaël Zasso <targos@protonmail.com>