Cleanup the C++ front-end.

Removed CPLUSPLUS_BEGIN/END_NAMESPACE & co and made it possible to compile the parser with CPLUSPLUS_WITHOUT_QT.

src/shared/cplusplus/TranslationUnit.h

@@ -56,8 +56,8 @@
 #include <stdio.h> // for FILE*
 #include <vector> // ### remove me
 
-CPLUSPLUS_BEGIN_HEADER
-CPLUSPLUS_BEGIN_NAMESPACE
+
+namespace CPlusPlus {
 
 class CPLUSPLUS_EXPORT TranslationUnit
 {
@@ -204,7 +204,7 @@ private:
     };
 };
 
-CPLUSPLUS_END_NAMESPACE
-CPLUSPLUS_END_HEADER
+} // end of namespace CPlusPlus
+
 
 #endif // CPLUSPLUS_TRANSLATIONUNIT_H