Bump version

Change-Id: Ie10b08a7ab02b7c73e22159894e60ea2d490c1fa
Merge remote-tracking branch 'origin/5.3' into dev

Conflicts:
	.qmake.conf

Change-Id: I4c0a9ad9d5e5a28f9faf572279344d86af69fb4c
Doc: Removing url variable from qdocconf file.

-url inherited from the url variable set in qtbase/doc/global

Change-Id: I2064a47e17a56636586f6c69b1630781cf6f0aaa
Reviewed-by: Martin Smith <martin.smith@digia.com>