smooth gradient for library
Fixes a crash on Lion, where NSWindow does not support weak references.
Removes leftover DLog().
Removes leftover DLog().
Merge pull request #523 from dethbunny/InterfaceTweaks

Uses a smoother gradient for the library background image.
Temporarily re-enable some device logging
Cleaned up a lot of OEHUDAlert code. This fixes #257 and #410
Merge remote-tracking branch 'upstream/master'