Building Qt for android under windows requires xkbcommon

Trying to build Qt 5.1.0 for android under windows, the compilation will stop when compiling "qtablegenerator.cpp".

Step to reproduce:

• Follow the steps described here http://qt-project.org/wiki/building_qt-android_on_windows

• After a while compilation will stop giving the following error:

  generator\qtablegenerator.cpp:51:33: fatal error: xkbcommon/xkbcommon.h: No such file or directory
  compilation terminated.