versioncontrol 6.x-2.0-beta3

Changes since 6.x-2.0-beta2:

• #1659676: Delete associated events when deleting a repository.
• Whoops, can't return if we want to do more later.
• #1653266: Implement exception-based control flow handling and synclogging on VersioncontrolRepository::sync().
• Remove old 1.x query constant cruft.
• Remove/relocate tons of cruft from versioncontrol.module.
• Move all theme functions into more sanely-named include file.
• Missing paren.
• Make workers always load repos without caching.
• #1546110: Merge branch 'sync-tinkering' into 6.x-2.x
• #1548006: Let backends define default plugins.
• Rename repository plugin names default array and document it.
• More unification for repository loaders.
• Minor touches on controller caching test.
• Introduce (hardcoded) sync logging system.
• Better to have VersioncontrolRepository::init default to 1.
• Add another layer of defaulting for plugins on repositories.
• versioncontrol.pages.inc was totally useless.
• Add an init field to repositories and refine the sync interface.
• Update VersioncontrolTestRepository to latest interface.
• Make controller cache toggling idempotent.
• Begin shifting flow control over sync framework to repository.
• Cache reflection objects for slight performance improvements.
• Expand sync plugin interface with verifyEvent() method.
• Add single-item entity loaders to VersioncontrolRepository.
• Add backend-level methods for toggling controller caching.
• Introduce VersioncontrolLockedRepositoryException.
• Override DrupalWebTestCase::randomName().
• Add a VersioncontrolSynchronizationException class.