qtlocation, qtsystems: Fix QT_MODULE_BRANCH

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
qtbase: upgrade to 5.2.0

* drop 0027-Fix-misaligned-selection-region-with-text-when-cente.patch
  resolved in upstream commit 5d8a882c11201a29475c5ea71cfb76c9de6573f5
* drop 0020-Use-BGRA-extension-in-bindTexture.patch
  resolved in upstream commit e1325cf26e146b68725cc1a0a02b274ce3dfbe5c

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
qtmodules: bump SRCREVs for 5.2.0 tags

* now all modules using qt5-git should be newer than any 5.1.* version

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
qtwebkit: Explicitly add ICU libraries to LIBS

* fails to build without this

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