QGuiApplicationPrivate::updateBlockedStatus(): Recurse over children.

Task-number: QTBUG-32242

Change-Id: Ia43257a998507b9a367f41dc2395ab92cc89a118
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>
Fix compilation of QLockFile on Solaris

flock isn't available but we use fcnlt already (which is the recommended
alternative on Solaris)

Change-Id: I718e59c4804950a26eeb610888e17ce666522dcc
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Detect popup window correctly in modal window blocked handling.

Task-number: QTBUG-32433

Change-Id: Ida8f6237a383311bc2e231de90fd54b90ebd1508
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>