c++/9512: [3.4 regression] Segmentation fault if qualifying name of template explicit specialisation in namespace

[Giovanni Bajo]

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9512

The code is illegal: it's ill-formed to define a qualified namespace member
(Comeau correctly refuses it). So, we still have an ICE with 3.4 CVS
20030430, and we have an accept-illegal with 3.3 CVS 20030421 (which is not
a regression, since GCC has always illegally accepted this syntax).

Giovanni Bajo