1. Parser improvements

1. Parser improvements
 a) const and virtual methods are parsed correctly (not static yet)
 b) "const" which is part of the return type is not swallowed

2. HelpGen improvements: -o outputdir parameter added to the cmd line,
   "//---------" kind comments discarded now.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@1700 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775