Add VMS options from specs to vms.opt

[Tristan Gingold]

On Jan 30, 2011, at 9:12 PM, Joseph S. Myers wrote:

> In preparation for the driver only accepting options listed in .opt
> files, and not other options that simply happen to match some spec,
> this patch adds the -map and -mvms-return-codes options from VMS specs
> to config/vms/vms.opt.  (These options would only have worked
> previously for driver commands not running cc1, because of all -m*
> options being passed down to cc1 automatically.)
> 
> Tested building cc1 and xgcc for crosses to: alpha64-dec-vms
> alpha-dec-vms ia64-hp-vms.  OK to commit?
> 
> 2011-01-30  Joseph Myers  <joseph@codesourcery.com>
> 
> 	* config/vms/vms.opt (map, mvms-return-codes): New Driver options.

Ok.  And thanks for doing this large work.