Revert "Register resources with absolute path"

The change broke beta with exception such as:

2013-06-26 22:39:51 deployment-jobrunner08 aawiki: [ff75b05a] [no req]  
Exception from line 32 of
/data/project/apache/common-local/php-master/extensions/MwEmbedSupport/MwEmbedResourceManager.php:
MwEmbedResourceManager::register not given readable path:
extensions/TimedMediaHandler/MwEmbedModules/EmbedPlayer


bug: 50264

This reverts commit c100236f7164c8d6366a090e8fb2066a590aee1f

Change-Id: I02ed22e324435e362cabdfc67e69c224ad9e2550
Merge "Revert "Register resources with absolute path""