C++: add code-model settings to choose one by mime-type.

The model-manager now supports multiple code models for semantic
highlighting and code completion, and will choose one based on the
mime-type of the editor.

The settings page is currently disabled. It will get enabled when a
second plug-in lands that has a ModelManagerSupport class.

Change-Id: I10023f52322ed6860397da15dba1c231e80e6517
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@digia.com>

src/plugins/cpptools/cpptools.pro

@@ -47,7 +47,9 @@ HEADERS += completionsettingspage.h \
     cpppreprocessor.h \
     includeutils.h \
     cpplocatordata.h \
-    cppmodelmanagersupportinternal.h
+    cppmodelmanagersupportinternal.h \
+    cppcodemodelsettings.h \
+    cppcodemodelsettingspage.h
 
 SOURCES += completionsettingspage.cpp \
     cppclassesfilter.cpp \
@@ -93,11 +95,14 @@ SOURCES += completionsettingspage.cpp \
     cpppreprocessor.cpp \
     includeutils.cpp \
     cpplocatordata.cpp \
-    cppmodelmanagersupportinternal.cpp
+    cppmodelmanagersupportinternal.cpp \
+    cppcodemodelsettings.cpp \
+    cppcodemodelsettingspage.cpp
 
 FORMS += completionsettingspage.ui \
     cppfilesettingspage.ui \
-    cppcodestylesettingspage.ui
+    cppcodestylesettingspage.ui \
+    cppcodemodelsettingspage.ui
 
 equals(TEST, 1) {
     SOURCES += \