Handle -v for pnacl-clang properly
Handle -v for pnacl-clang properly

-v is an option to make compilers more verbose, and this can be used
with other compile options unlike --version.

Without this patch,

./pepper_24/toolchain/linux_x86_pnacl/newlib/bin/pnacl-clang -c hello.c -v

fails with the following error message:

error: unable to create target: 'No available targets are compatible with this
      triple, see -version for the available targets.'
1 error generated.

Review URL: https://chromiumcodereview.appspot.com/11417137

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@10358 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

nacl-webkit/native_client,nacl-webkit/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,nacl-webkit/native_client,nacl-webkit/native_client,sbc100/native_client,sbc100/native_client