Reflect version requirement in sample appcast
Remove unused autorelease pool class usage.

Do we even still use the BinaryDelta tool?
Remove option to install unverified updates
Convert the xibs to Xcode 5.1 format.
The SUUpdateAlert wasn’t migrated in this commit because of the autolayout branch.
Migrate the SUUpdateAlert xibs to Xcode 5.
Finish moving all informal protocols to formal protocols.
Fix improperly-named protocols.
Updated README
Merge pull request #335 from pornel/master

Finish moving all informal protocols to formal protocols.
Merge pull request #39 from pornel/Xcode5xibs

Migrate xibs to Xcode 5
If the downloaded update fails the code signing check, log out some more detailed information to help with diagnosing the problem.
Fixed potential CFRelease of NULL, code style fixes
zh-CN translate "Learn More" button
Merge commit 'e7b709437287937e4dbb593bbfc9435d477bdec8' into yahooxpc

Conflicts:
	SUBasicUpdateDriver.m
	SUStatus.xib
	en.lproj/SUAutomaticUpdateAlert.xib