Fixed a link problem on MacOS.
Fixed a link problem on MacOS.

On MacOS, inqt5/qstandardpaths_mac.cpp will only link if Carbon
is linked, too.

Change-Id: Iafe6fbf5f3e64d6f55fda0de2836bb4a9c8a4200
Sanity-Review: Qt Sanity Bot <5581206bb7e0307f0d99eb71898ae6b694149ca5@ovi.com>
Reviewed-by: David Faure <86a8c136eda381b2295095fae2f365917f1ca4ea@kde.org>

qtproject/playground-mimetypes,qtproject/playground-mimetypes,d1vanov/qt4-mimetypes,d1vanov/qt4-mimetypes,d1vanov/qt4-mimetypes,qtproject/playground-mimetypes,qtproject/playground-mimetypes,d1vanov/qt4-mimetypes,d1vanov/qt4-mimetypes,d1vanov/qt4-mimetypes,qtproject/playground-mimetypes,qtproject/playground-mimetypes,d1vanov/qt4-mimetypes,qtproject/playground-mimetypes,qtproject/playground-mimetypes,qtproject/playground-mimetypes,d1vanov/qt4-mimetypes,d1vanov/qt4-mimetypes