[Bug libstdc++/52104] go1 fails to link on Solaris 8/9 x86 with native TLS

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52104

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-02-03 
10:11:40 UTC ---
Looks as though we need an extra explicit instantiation in src/c++11/future.cc