[PATCH]Add --style switch to binutils

[Ken Block]

The --style switch allows tools to select which demangler is used. For
example --style=gnu-new-abi will use the new ABI demangler. The current
supported styles are: auto,gnu,lucid,arm,hp,edg,gnu-new-abi. All tools
that support demangling should support this switch. This includes: nm,
objdump, addr2line, ld, and gprof.