Regressions on master at commit r12-7869 vs commit r12-7838 on Linux/i686

[H.J. Lu]

New failures:

New passes:
FAIL: 28_regex/algorithms/regex_match/ecma/wchar_t/cjk_match.cc (test for excess errors)
FAIL: g++.dg/cpp0x/variadic-alias3.C  -std=c++14 (internal compiler error: in hashtab_chk_error, at hash-table.cc:137)
FAIL: g++.dg/cpp0x/variadic-alias3.C  -std=c++14 (test for excess errors)