1. more C++ parser fixes - now it almost parses wx/string.h

1. more C++ parser fixes - now it almost parses wx/string.h
 a) #if/#ifdef/#else (very) limited support
 b) param type fix - now indirection chars are correctly handled
 c) class/struct/union distinction
 d) public/private fixes
 e) Dump() function added - very useful for debugging

2. option to ignore parameter names during 'diff' (in fact, they're ignored
   by default, and this option switches it on)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@1744 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775