gtk+3: update to upstream version 3.4.4

* fix.build.automake-1.12.x.patch dropped as upstream has fixed
  the problem addressed.
* COPYING has had formatting changes
* In license segments of source files FSF street address is replaced
  with URL.

Signed-off-by: Marko Lindqvist <cazfi74@gmail.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>