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

Done with Erik Verbruggen

Unfortunately, the MacroResolver does not scale and we get pretty bad performances when parsing big projects.

Introduced T_CPP_COMMENT and T_CPP_DOXY_COMMENT to handle C++-style comments and improved CPPEditor::isInComment to handle the newly introduced tokens.

As side effect,this change should fix the regression we introduced in the "automagically" quote/brace insertion.