Regressions on trunk at revision 152569 vs revision 152562

[H.J. Lu ia32]

New failures:
FAIL: gcc.dg/plugin/one_time-test-1.c -fplugin=./one_time_plugin.so (internal compiler error)
FAIL: gcc.dg/plugin/one_time-test-1.c -fplugin=./one_time_plugin.so (test for excess errors)

New passes:
FAIL: g++.dg/lto/20081109 cp_lto_20081109_0.o-cp_lto_20081109_1.o execute -O0 -fwhopr