Xcode 4.6 validated settings: enables various warnings
Fixed RFC-2822 test; uses default local time zone
Build 120.3
Version 1.5
Ignore project.xcworkspace
Merge branch 'master' into issues/separate-framework-and-lib

* master:
  Ignore project.xcworkspace
  Version 1.5
  Build 120.3
  Fixed RFC-2822 test; uses default local time zone
  Xcode 4.6 validated settings: enables various warnings

Conflicts:
	ActiveSupportKit.xcodeproj/project.pbxproj
	ActiveSupportKit/ActiveSupportKit-Info.plist
	ActiveSupportKitTests/ActiveSupportKitTests-Info.plist