Work around legacy framework structures.

Existing versions of qmake produce application bundles
which are incompatible with OS X code signing.

Deploy framework Info.plist files to the correct
location. Patch them to remove any "_debug" suffix
on the value for CFBundleExecutable.

Task-number: QTBUG-32896
Change-Id: Id657e394f3bf919713a43e395e716bf46488c644
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>