Renamed ZendOptimizerPlus.so into opcache.so

Renamed ZendOptimizerPlus.so into opcache.so · php/php-src@8d35170

Original file line number	Diff line number	Diff line change
`@@ -25,11 +25,11 @@ Quick Install`
`25`	`25`
`26`	`26`	`- Install`
`27`	`27`
`28`		`- make install # this will copy ZendOptimizerPlus.so into PHP extension directory`
	`28`	`+ make install # this will copy opcache.so into PHP extension directory`
`29`	`29`
`30`	`30`	`- Edit php.ini`
`31`	`31`
`32`		`- zend_extension=/...full path.../ZendOptimizerPlus.so`
	`32`	`+ zend_extension=/...full path.../opcache.so`
`33`	`33`
`34`	`34`	`NOTE: In case you are going to use Zend Optimizer+ together with Xdebug,`
`35`	`35`	`be sure that Xdebug is loaded after Optimizer+. "php -v" must show Xdebug`