APC CSS and JS check.
Added a check for apc and changed apc_exists to apc_fetch so this works on older apc versions than 3.1.4.
Back to 7.x-dev
Issue #1558402 by greggles: Fixed forum_index() not form_index().
Issue #1558548 by tim.plunkett, sun: Fixed Notice: Undefined index: default_image() in image_field_prepare_view().
Issue #813146 by bleen18: remove variable cruft in node_submit function
Issue #/1536750 by perusio: Fix drupal_goto documentation of status codes
Issue #1513580 by matt2000: Update hook_init and hook_boot docs to say whether themes are loaded when they run
Issue #1302228 by xjm, yched, chx: Fixed Change notice for: field_has_data() returns inconsistent results – possible data loss.
Allow custom database configuration, including prefixes
Merge branch 'master' of github.com:pantheon-systems/drops-7 into allow-db-config
Issue #1546618 by wulff: Change duplicate defgroup to addtogroup
Issue #1546618 by wulff: Fix addtogroup syntax in menu.install
Issue #1578590 by ksenzee: Replace references to nonexesitent function drupal_initialize_variables
Issue #1592866 by David_Rothstein: Add David Rothstein to MAINTAINERS.txt as a D7 core co-maintainer.
Updating t() function call to use proper Drupal 7 arguments
Permit developers to specify $databases in settings.php. Pantheon still controls the default, but additional custom database are now allowed.
Update to account for a site where settings.php isn't pushed to pantheon at all
Issue #1358944 by wulff: Fix misuse of ingroup in documentation blocks
Issue #1313510 by NROTC_Webmaster, oriol_e9g, aenw: Clean up API docs for Statistics module