qmake5: set OE_QMAKE_INCDIR_QT

This is set when generation an SDK, and thus would be usefull to have also
when bitbaking. That allows us to use this in *.prf files which is used
both when bitbaking as well as when using the SDK.

Signed-off-by: Anders Darander <anders@chargestorm.se>
(cherry picked from commit 96e8d29fdbdf6fa656c854d9b55c5b0c213166a7)
Acked-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
qt5-git: Update to rc1+, latest revision in 5.4 branch

* qtwebengine LIC_FILES_CHKSUM updated because of Copyright
  year update in chromium's LICENSE
  < // Copyright (c) 2013 The Chromium Authors. All rights reserved.
  and shortened the entry for qtwebengine LIC_FILES_CHKSUM, because
  it was including also few #include lines which were changed recently

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