BundleUtilities: Ensure framework symlinks and Info.plist exist

This restores Qt SDK 4.8 and OS X >= 10.6.5 codesign compatibility
improving embedding frameworks using correct bundle layout described at:

https://developer.apple.com/library/mac/documentation/MacOSX/Conceptual/BPFrameworks/Concepts/FrameworkAnatomy.html

1. If Versions/VERSION/Resources/Info.plist is missing, well known
   incorrect locations are checked for Info.plist and Info.plist is
   copied from there, otherwise codesign will fail.

2. Root framework symlinks to binary and Resources are restored to
   point inside Versions/Current, otherwise Qt 4.8 looking for
   Resources/ in framework root will fail.
Merge topic 'fix-OSX-bundle-rpaths-and-Qt5' into next

41564ff2 BundleUtilities: Ensure framework symlinks and Info.plist exist