[SVN] Bundle commit 357

[Kevin Ballard]

Revamp internals of Build with xcode command.
New variable TM_XCODE_PROJECT provides the name of the xcode project to use in case of ambiguities
Now checks for presence of TextMate project better (works with non-saved projects)
Now deals with directory check for xcode projects much better
Finds xcode project based on TextMate project name better
Detects presence of build style much more reliably

Changed:
U   trunk/Objective-C.tmbundle/Commands/Build.plist