Fix QOpenGLWindow tests when devicePixelRatio != 1

Change-Id: I83d71de8b9d735cd649a6c514e41a9ff23625005
Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>
Remove QOpenGLContextPrivate::globalShareContext

This has previously been replaced with qt_gl_global_share_context
and all using code has been ported to the new name at this point.

Change-Id: I13832f583456891dd057a7b414f45ec3e83f5698
Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>
Correct QPainter::clipPath() documentation.

Change-Id: Ie8ea01eee23e28378eadca0e87dc89fd62aec14f
Reviewed-by: Gunnar Sletta <gunnar@sletta.org>
Delay showing keyboard until application is active

Android starts asking lots of questions when the software keyboard
pops up, so let's wait until the application is initialized. This
works around a deadlock on startup.

Task-number: QTBUG-41369
Change-Id: I1c79e32d08c7cc11748ec55efbff3bc25e40f4b2
Reviewed-by: Christian Stromme <christian.stromme@digia.com>
Android: deadlock avoidance

This change adds deadlock protection to all places where we lock
one thread while waiting for the other to do something. If we
detect that the other thread is going to block, we abort the
operation. This could cause unexpected problems, such as painting
errors, text input errors, or even crashes, but the alternative is
a guaranteed deadlock.

Task-number: QTBUG-41369
Change-Id: I2627a955cfafc4bce54eb9d0d38e19b768b06956
Reviewed-by: Christian Stromme <christian.stromme@digia.com>