Remove MSVC6 support.

Don't support this compiler any more, this allows to get rid of tons of
MSVC6-specific workarounds, in particular we can now use Bind() and natural
template functions calls in the library code.

Also remove MSVC6 project and solution files and don't generate them when
bakefile_gen is ran any more (removing the remaining occurrences of msvc6prj
from the bakefiles results in weird bake-time errors, so it's simpler to just
leave them there).

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76532 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/object.cpp

@@ -37,14 +37,14 @@
 // we must disable optimizations for VC.NET because otherwise its too eager
 // linker discards wxClassInfo objects in release build thus breaking many,
 // many things
-#if defined __VISUALC__ && __VISUALC__ >= 1300
+#if defined __VISUALC__
     #pragma optimize("", off)
 #endif
 
 #if wxUSE_EXTENDED_RTTI
 const wxClassInfo* wxObject::ms_classParents[] = { NULL } ;
 wxObject* wxVariantOfPtrToObjectConverterwxObject ( const wxAny &data )
-{ return wxANY_AS(data, wxObject*); }
+{ return data.As<wxObject*>(); }
  wxAny wxObjectToVariantConverterwxObject ( wxObject *data )
  { return wxAny( dynamic_cast<wxObject*> (data)  ) ; }
 
@@ -66,7 +66,7 @@ wxClassInfo wxObject::ms_classInfo( wxT("wxObject"), 0, 0,
 #endif
 
 // restore optimizations
-#if defined __VISUALC__ && __VISUALC__ >= 1300
+#if defined __VISUALC__
     #pragma optimize("", on)
 #endif