Fix vorbis first of all.
Unify into one 4.6.3 xcodeproj file.
Ignore Xcode user specific files.
Remove multiple duplicate entries.
Prevent swap files from being added.
Merge pull request #19 from wolfman2000/wolf-unified-xcode4

Fix Xcode 4 building, bring it back to one file.

dbk2 approves. Calling it as good then. If mistaken, make a new branch and prove it.