Update CPlusPlus and Doxygen formats to be better.

Now the `'*'` characters in fixed-width blocks show up correctly,
with respect to how I write code.  (I think doxygen also swallows
them anyhow, so the highlighting is more consistent with doxygen's
parser.)

Also on loading a file, everything looks better now.

vim/after/syntax/cplusplus.vim

@@ -7,13 +7,13 @@ syn include @cxxInDoxygen syntax/cpp.vim
 unlet b:current_syntax
 
 " This enables Basic C++ support, with my extensions.
-let c_no_bracket_error=1
-let c_no_curly_error=1
-if version < 600
-  so <sfile>:p:h/cpp.vim
-else
-  runtime! syntax/cpp.vim
-endif
+"let c_no_bracket_error=1
+"let c_no_curly_error=1
+"if version < 600
+"  so <sfile>:p:h/cpp.vim
+"else
+"  runtime! syntax/cpp.vim
+"endif
 
 if exists("b:current_syntax")
   unlet b:current_syntax