Recognize NaCl OS ABI for all ELF files.

We had already removed Linux OS ABI.  Now we must handle all ELF
files, otherwise their architecture is not initialized correctly
due to unknown OS ABI.

BUG= https://code.google.com/p/nativeclient/issues/detail?id=3313
TEST= ./scons --mode=opt-host,nacl platform=x86-64 bitcode=1 run_gdb_print_symbol_test

Review URL: https://codereview.chromium.org/12380017
1 file changed