Microsoft specific handling of variadic macros not supported

[Bertk]

The sample variadic_macros.cpp from MSDN fails with com.sonar.sslr.api.RecognitionException

#define MACRO(s, ...) printf(s, __VA_ARGS__)

int main() {
    MACRO("hello, world\n");
}

The syntax tree is created for the next code sample but error messages are shown:

#define EMPTY
#define MACRO(s, ...) printf(s, __VA_ARGS__)

int main() {
    MACRO("error\n", EMPTY);  // would cause error C2059, except VC++ 
                              // suppresses the trailing comma
}

e.g.

08:22:26.021 [AWT-EventQueue-0] ERROR CxxPreprocessor - Mismatch: expected ',' got: ')'

[Bertk]

@guwirth I have a solution proposal for this (b7c588a). Please review and send me your feedback.
There is still an issue with the BOOST_PP_STRINGIZE which I want to analyze. But this doesn't belog to variadic macros ...

INFO: [D:\Workspaces\xxx\boost\include\boost\mpl\list.hpp:36]: cannot parse included filename: BOOST_PP_STRINGIZE(boost/mpl/list/list20.hpp)'
INFO: [D:\Workspaces\xxx\boost\include\boost\mpl\list.hpp:36]: cannot find the sources for '#   include BOOST_PP_STRINGIZE(boost/mpl/list/AUX778076_LIST_HEADER)'
INFO: [D:\Workspaces\xxx\boost\include\boost\mpl\vector.hpp:36]: cannot parse included filename: BOOST_PP_STRINGIZE(boost/mpl/vector/vector20.hpp)'
INFO: [D:\Workspaces\xxx\boost\include\boost\mpl\vector.hpp:36]: cannot find the sources for '#   include BOOST_PP_STRINGIZE(boost/mpl/vector/AUX778076_VECTOR_HEADER)'

[Bertk]

This issue is solved with PR #853