Qt Creator CMake port

Based on Tobias Hunger's work from a few months ago.

The CMake configuration needs libclang and Qt paths specified as
CMAKE_PREFIX_PATH.

Auto tests are run with "ctest". At the moment the pass rate is 87%.

Change-Id: Iba98e39bf22077d52706dce6c85986be67a6eab0
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/git/CMakeLists.txt

@@ -0,0 +1,41 @@
+add_qtc_plugin(Git
+  PLUGIN_DEPENDS Core DiffEditor TextEditor VcsBase
+  SOURCES
+    annotationhighlighter.cpp annotationhighlighter.h
+    branchadddialog.cpp branchadddialog.h branchadddialog.ui
+    branchcheckoutdialog.cpp branchcheckoutdialog.h branchcheckoutdialog.ui
+    branchmodel.cpp branchmodel.h
+    branchview.cpp branchview.h
+    changeselectiondialog.cpp changeselectiondialog.h changeselectiondialog.ui
+    commitdata.cpp commitdata.h
+    gerrit/authenticationdialog.cpp gerrit/authenticationdialog.h gerrit/authenticationdialog.ui
+    gerrit/branchcombobox.cpp gerrit/branchcombobox.h
+    gerrit/gerritdialog.cpp gerrit/gerritdialog.h gerrit/gerritdialog.ui
+    gerrit/gerritmodel.cpp gerrit/gerritmodel.h
+    gerrit/gerritoptionspage.cpp gerrit/gerritoptionspage.h
+    gerrit/gerritparameters.cpp gerrit/gerritparameters.h
+    gerrit/gerritplugin.cpp gerrit/gerritplugin.h
+    gerrit/gerritpushdialog.cpp gerrit/gerritpushdialog.h gerrit/gerritpushdialog.ui
+    gerrit/gerritremotechooser.cpp gerrit/gerritremotechooser.h
+    gerrit/gerritserver.cpp gerrit/gerritserver.h
+    git.qrc
+    gitclient.cpp gitclient.h
+    gitconstants.h
+    giteditor.cpp giteditor.h
+    gitgrep.cpp gitgrep.h
+    githighlighters.cpp githighlighters.h
+    gitplugin.cpp gitplugin.h
+    gitsettings.cpp gitsettings.h
+    gitsubmiteditor.cpp gitsubmiteditor.h
+    gitsubmiteditorwidget.cpp gitsubmiteditorwidget.h
+    gitsubmitpanel.ui
+    gitutils.cpp gitutils.h
+    gitversioncontrol.cpp gitversioncontrol.h
+    logchangedialog.cpp logchangedialog.h
+    mergetool.cpp mergetool.h
+    remoteadditiondialog.ui
+    remotedialog.cpp remotedialog.h remotedialog.ui
+    remotemodel.cpp remotemodel.h
+    settingspage.cpp settingspage.h settingspage.ui
+    stashdialog.cpp stashdialog.h stashdialog.ui
+)