qmake: add $$title() function to convert strings to title case
qmake: add $$title() function to convert strings to title case

Change-Id: Ic535a8f7cc2ab7b7f1948b2d0237ebe9a71c7ec7
(cherry picked from qtbase/413ec67fc46ad7049f870cdb8ead35149b215d45)
Reviewed-by: Joerg Bornemann <47777b9406dbddd02a3fdca8341789a013805a11@digia.com>
Reviewed-by: Daniel Teske <d8a411aec9a206efedb4d45b75fe8d13f1e2b628@digia.com>

mer-qt/qttools,mer-qt/qttools,mer-qt/qttools,mer-qt/qttools,mer-qt/qttools,mer-qt/qttools