Android: use FBO readback workaround by default.

Maintaining a black list of devices can't be reasonably done.
The workaround is now enabled by default. It can be disabled with the
QT_ANDROID_DISABLE_GLYPH_CACHE_WORKAROUND environment variable, in
which case the current list of blacklisted drivers will still be taken
into account.

Task-number: QTBUG-40483
Change-Id: I9b90ab45e86569e8e4679333ddb9b835189892c7
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>
Qt 5.3.2 changelog

Change-Id: I96c014c364c93d412b11acee00dc339d5eceb306
Reviewed-by: Akseli Salovaara <akseli.salovaara@digia.com>
Reviewed-by: Jani Heikkinen <jani.heikkinen@digia.com>
Merge remote-tracking branch 'origin/5.3.2' into 5.3

Change-Id: Iae36a5178c0411d4d36508e0725e132af390157a
Remove reference to removed qatomic_sparc.h

qatomic_sparc.h was removed previously as part of general cleanup of
old atomic code for Qt 5.3. Unfortunately SPARC include reference was
not removed resulting in build failure on that platform.

Task-number: QTBUG-41384
Change-Id: Ic6e31b32324b0e5dd3700a6a21515a8eea5668bd
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>