The issue with the malformed-machos 00000031.a test is that it needed ‘-arch x86_64’

flag as it was a Mach-O universal file.

The default as to which architecture slice that is dumped without an -arch flag
depends on the host architecture and the contents of the universal file.  The
malformed archive 00000031.a file has both an x86_64 and i386 slice.  So for
for x86_64 hosts only that slice is dumped, for non-x86_64 hosts, which is many
of the bots both slices are dumped.

The test is intended to only check that the malformation of the x86_64 which
has a non-decimal characters in the size field of the archive header so it no
longer crashes.

The problem turned out that the i388 slice of the malformed archive had a
different malformation which was causing the non-x86_64 bots to get this error:

llvm-objdump -macho -disassemble -arch i386 00000031.a 
Archive : .00000031.a
00000031.a(c_start.o):
LLVM ERROR: Symbol name entry points before beginning or past end of file.

and causing the test as it was written to fail.  So by adding ‘-arch x86_64’ it
should correct the test and the malformation on the i388 slice will not be
dumped.

Also the removal of the malformed-machos mem-crup-0261.macho was not causing
the issue so that is put back in.

Sorry for the churn on these tests, Kev

llvm-svn: 250184

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