[GiNaC-list] [patch] fix template template declarations [GCC 4.2 compilation fix]

Hello! The attached patch corrects template template declarations, so GiNaC can be compiled with G++ 4.2. Without this patch compilation fails, see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=362220 for details. Note that `make check' still fails with G++ 4.2. Basically, ex e("-1 + 2*I", symbol()); triggers an exception. My patch *does not* fix this error. Best regards, Alexei. -- All science is either physics or stamp collecting.