Update Qt Concurrent's code generators

Qt Concurrent was designed to rely on code generators (http://qt.gitorious.org/qt/qttools/trees/master/src/qtconcurrent) for producing these 2 files:

• http://qt.gitorious.org/qt/qtbase/blobs/master/src/concurrent/qtconcurrentrun.h
• http://qt.gitorious.org/qt/qtbase/blobs/master/src/concurrent/qtconcurrentstoredfunctioncall.h

However, recent patches to Qt Concurrent (including for Qt 4.x) have been made directly, bypassing the code generators. As a result, the generators have fallen out of sync with their targets, and need to be updated.

Discussed in http://lists.qt-project.org/pipermail/development/2012-November/007843.html