Updated with changes from OmniGroup svn [r207477]

General:
- Fixed build issues with Xcode 5.1's version of clang
- Fixed 64-bit issues for iOS
- Fixed deprecated API issues for requiring the 10.9 SDK
- Be more explicit about __autoreleasing in various out-parameter places for compatiblity with '-fobjc-arc-disable-writeback'
- Enabled GCC_WARN_UNDECLARED_SELECTOR in some projects; will continue to advance to others

Configurations:
- Require the 10.9 SDK
- Remove explicit list of architectures for iOS, allowing 64-bit builds

OmniBase:
- Add some more ARC helpers
- Remove some GC helpers

OmniFoundation:
- Improve error handling in OFLockFile
- Add keyed access for OFBijection
- Started moving away from OFSubjectTargetingScriptCommand.
- Added a helper for re-evaluating an object specifier with a different container
- Added more scripting debug helpers
- Improved ARC friendliness of a bunch of code
- Added NSString +invalidXMLCharacterSet and +discouragedXMLCharacterSet and deal better with discouraged characters
- Made OFRandom's shared state thread safe instead of just warning about it
- Made OFPreference KVO compliant for objectValue
- Expose support for a reference date in OFRelativeDateParser/OFRelativeDateFormatter

OmniAppKit:
- Do a better job sending feedback with non Mail.app mailers
- Removed the pattern color picker
- Converted OAAboutPanel to xib
- Added an action to open the application scripts folder (for sandboxed app's usage)
- Cleaned up the find API
- Added NSWindow methods to gather blocks and execute them before windows are displayed
- OAContextControlDelegate is a formal protocol now
- Added AXShownMenu and AXShowMenu support
- +tintedImage:... now returns a self-updating tinted image

OmniDataObjects:
- Removed the ODO_SUPPORT_UNDO setting from ODOFeatures.h since we always have NSUndoManager.

OmniFileExchange:
- Added a test case for a spurious conflict case

OmniInspector:
- Converted to ARC
- More work on support for sidebar inspectors
- Inspectors are finally NSViewController-based

OmniQuartz:
- Avoid an exception if we get a nil colorspace
- Support fill-and-stroke on the vector output path

OmniSoftwareUpdate:
- Fixed unrecognized selector exception on significant time changes on iOS

OmniUI/iPad:
- Improved handling of app-owned 'special' URLs
- Restored single-swatch rendering to OUIColorAttributeInspectorWell
- Add our own image picker rather than trying to shoehorn Apple's into our navigation controller
- Added OUISegmentedViewController
- Updated look for OUIInspectorOptionWheel

OmniUI/iPad-Document
- Fix a crasher when duplicating an OmniPresence document w/o a preview while offline
- Improved import/export support