backported fix to fold-const.c breaks gcc 4.6

[Peter Garbett]

Well, at least with my cross it does.

this change, or something like it:

http://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=09a77c2ea0b41fdff8820cbcbe41b35762db5c45

introduces a reference to TS_TYPED into the 4.6 branch for
fold-const.c, and it isnt defined,
or at least neither I nor my compiler can find it.


Any helpful hints on how to proceed?