[Bug libstdc++/51649] pretty printers don't handle std::__7:: namespace

[pluto at agmk dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51649

--- Comment #1 from Pawel Sikora <pluto at agmk dot net> 2011-12-21 11:53:23 
UTC ---
adding '(__7::)?' to regex patterns should be ok.