With pkgconfig < 0.28 output is a single space
With pkgconfig = 0.28 output is an empty string,
This breaks the test on the 2 vars

Need to split when
LIB set (ex -lssl -lcrypto)
INC empty (because /usr/include used)
Merge branch 'PHP-5.4' into PHP-5.5

* PHP-5.4:
  With pkgconfig < 0.28 output is a single space With pkgconfig = 0.28 output is an empty string, This breaks the test on the 2 vars
Merge branch 'PHP-5.5'

* PHP-5.5:
  With pkgconfig < 0.28 output is a single space With pkgconfig = 0.28 output is an empty string, This breaks the test on the 2 vars
Reimplemented OPcache restart trigger. Now, if memory or hash are full the restart is scheduled only in case the amount of wasted memory is above opcache.max_wasted_percentage. Otherwise OPcahce continue serving the following requests using already cached files, but doesn't try to add new files (the cache is full anyway).
don't optimize script if it's not going to be cached
Merge branch 'PHP-5.5'

* PHP-5.5:
  don't optimize script if it's not going to be cached
  Reimplemented OPcache restart trigger. Now, if memory or hash are full the restart is scheduled only in case the amount of wasted memory is above opcache.max_wasted_percentage. Otherwise OPcahce continue serving the following requests using already cached files, but doesn't try to add new files (the cache is full anyway).
Merge branch 'master' of git.php.net:php-src

* 'master' of git.php.net:php-src:
  With pkgconfig < 0.28 output is a single space With pkgconfig = 0.28 output is an empty string, This breaks the test on the 2 vars