Ping^3: PR 50113/50061: Fix ABI breakage from emit_library_call_value_1 patch

[Richard Sandiford]

Ping for this patch to emit_library_call_value_1:

    http://gcc.gnu.org/ml/gcc-patches/2011-08/msg00735.html

which fixes a bootstrap failure on MIPS since:

    http://gcc.gnu.org/ml/gcc-patches/2011-06/msg02341.html

Tested on mips64-linux-gnu, mips-sgi-irix6.5 (by Rainer) and
on both big and little-endian ARM (by Julian).

Richard