This enables localized translated messages in MacVim, instead of only
using English.

- Get Travis to compile MacVim with gettext dependencies which is a
  pre-requisite for multilang localized messages. Also add a quick
  regression test to make sure localized messages will keep working.
- Add a post-build phase to copy all locale .mo files to VIMRUNTIME/lang
  so they will be bundled along with the rest in the app package. Normal
  Vim usually installs the localized files to a global location like
  /usr/local/share/locale/ but macOS applications are all self-contained
  bundles we don't want to do this. Use VIMRUNTIME/lang as the
  destination because that's also what the Windows build uses and
  existing code already knows to use it by using bindtextdomain.
- Fix vim.h header to not unbind bindtextdomain for MacVim. There is
  previously a little bit of hack there where it would only use
  bindtextdomain when DYNAMIC_GETTEXT is set because that's only set for
  Windows. Just add a special case for MacVim for now to get similar
  behavior to Windows.

Close macvim-dev#991

ychin deleted the macvim-locale-message-translation branch

ychin added a commit to ychin/macvim that referenced this pull request

Since macvim-dev#1070 added support for localized messages for MacVim, add some
translations for some MacVim-specific messages (only add intro text
and :version output for now) for some languages (es, ja, zh) to make the
intro screen look less like an odd mix.

ychin mentioned this pull request

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ychin mentioned this pull request

ychin added a commit to ychin/macvim that referenced this pull request

When adding support for gettext in macvim-dev#1070, a MacVim-specific ifdef was
added unnecessary around `bindtextdomain`. That ifdef isn't actually
necessary and it seems to have been done due to an incorrect
understanding of the ifdef logic there regarding `FEAT_GETTEXT`. Just
remove it to clean it up. Localization should still work.

ychin mentioned this pull request

ychin added a commit to ychin/macvim that referenced this pull request

When adding support for gettext in macvim-dev#1070, a MacVim-specific ifdef was
added unnecessary around `bindtextdomain`. That ifdef isn't actually
necessary and it seems to have been done due to an incorrect
understanding of the ifdef logic there regarding `FEAT_GETTEXT`. Just
remove it to clean it up. Localization should still work.