Add the support for installing shared PHP extension
Add the support for installing shared PHP extension

CHH/heroku-buildpack-php,jstacoder/heroku-buildpack-php-1,CHH/heroku-buildpack-php,jstacoder/heroku-buildpack-php-1,stof/heroku-buildpack-php,penciu/apache,stof/heroku-buildpack-php,stof/heroku-buildpack-php,pierredup/packager-buildpack-php,pierredup/packager-buildpack-php,CHH/heroku-buildpack-php,penciu/apache,penciu/apache