If the gcc version is 4.7 or less and IDENT_ASM_OP is undefined then
output_ident is unused, resulting in a compiler warning.  Suppress the
warning (simpler than suppressing the function: gcc-4.8 poisons IDENT_ASM_OP
which complicates things).


git-svn-id: https://llvm.org/svn/llvm-project/dragonegg/trunk@182635 91177308-0d34-0410-b5e6-96231b3b80d8