Unify naming of LIBS/CFLAGS for 3rd party libraries
Unify naming of LIBS/CFLAGS for 3rd party libraries

Most libs use QMAKE_LIBS/CFLAGS, but some have other naming
conventions. Unify them into using QMAKE_LIBS/CFLAGS.

Change-Id: I39b188adc1f9a223a83b294c5315c3095a9c68de
Reviewed-by: Oswald Buddenhagen <6a8868beda3e139b5ac22b2534a23d3e6ba81819@theqtcompany.com>

MartinBriza/QGnomePlatform