[Patch] clang-cl: add support for /? and /help

[Hans Wennborg]

Hi all,

The attached patch makes clang-cl handle the /? and /help command-line flags.

These are both just aliases to the regular -help flag, but this puts
the code in place for accepting (and printing as part of the help
message) different flags depending on the driver mode.

Please take a look!

Thanks,
Hans
-------------- next part --------------
A non-text attachment was scrubbed...
Name: first-cl-flags.diff
Type: application/octet-stream
Size: 4752 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/cfe-commits/attachments/20130722/bc3b6566/attachment.obj>