[Bug c++/45114] implement C++0x alias-declaration

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45114

--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-10-27 22:27:35 UTC ---
I don't have any self-contained tests but there are a number of TODOs in
libstdc++ which indicate places that should use a template alias when available
- I'll try the patch and revisit those TODOs