We use `cc' instead of `c++' and we also also moved the code in qt4project.cpp.
Done by ossi reviewed by me.

Done by ossi

Details:  This should improve performance a bit. Instead of starting on indexer per .pro file, schedule and compress updates of ui files. And don't update if we have a full project code model update scheduled anyway. Which helps the startup case.

Details:
This patch makes use of system icons as a base
and draws overlay on top. This should blend a bit better
into the native icon theme.

replace ExtensionSystem::PluginManager::instance()->getObject<Core::ICore>() by Core::ICore::instance()

forward declaration is sufficient.

Details:  Adjust comments to actual situation

Details:  Now it even works for qtc's source.

Details:  That is we update all generated headers (which are new or
modfied) in the C++ Engine. Big if, this only works if we find the
correct path for the ui header files. Which is known to sometimes not
work, I'll fix that next.

RevBy: dt

Task:     Found by Roberto.

Details:  Free the whole ProFile*, ProItem*, ProValue* and etc
structure after parsing, that frees around 200Mb for projects.pro.

RevBy:    Patch by eskil
Details:  I can't really see why the path could be wrong there, and
can't reproduce the crash.

Task: 205821
RevBy: con
Details:  Add a IVersionControl to git. Extend IF to able to return a name and add enabling options. Connect project explorer to enable the right VCS.

Task:     Reported by eskil on irc.

Details:  ProFileCache be gone, as is ManagedProFile, not to be missed.
Drastically simplified how ownership works.