3.0 mips-sgi-irix6.5: Exception Handling Broken Recently

[Billinghurst, David (CRTS)]

Lovely.  Does the job on both trunk and branch.

Running target unix/-mabi=64
FAIL: g++.dg/mangle1.C scan-assembler 
FAIL: g++.ext/instantiate1.C not instantiated (test for errors, line 20)
FAIL: g++.ext/instantiate1.C not instantiated (test for errors, line 22)
XPASS: g++.jason/thunk3.C (test for excess errors)
XPASS: g++.jason/thunk3.C  Execution test
XPASS: g++.oliva/delete3.C  Execution test
XPASS: g++.other/crash27.C (test for excess errors)

		=== g++ Summary for unix/-mabi=64 ===

# of expected passes		6419
# of unexpected failures	3
# of unexpected successes	4
# of expected failures		110
# of untested testcases		20