Since Xcode 6.3, this must be set to NO because stripping on copy is no
longer fully supported due to the potential of input binaries being code
signed. In this case Xcode will simply ignore the strip step and issue
a warning since stripping would invalidate the code signature. This
change silences that annoying warning for release builds. Also, the
setting assignment is moved from being hardcoded in the generator, to
a QMAKE_MAC_XCODE_SETTINGS value.
Change-Id: If25511edddc12b7b0407e2992d80884b7d6437dc
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@qt.io>
1c8224511d