* stl_config.h (__STL_PTHREADS): Don't define for glibc 2 if
_G_USING_THUNKS is not defined.
Bring over from egcs-1.0.3 branch since ppc-linux still uses glibc-1.9x.
From-SVN: r20775
* ropeimpl.h: Check __STL_PTHREADS instead of _PTHREADS.
* stl_alloc.h: Ditto.
* stl_config.h: Ditto.
* stl_rope.h: Ditto.
* stl_config.h: include <_G_config.h> if __GNUG__ is defined.
(__STL_PTHREADS): Defined if _PTHREADS is defined or
__GLIBC__ >= 2.
From-SVN: r18138