[Spirit-general] Keywords patch update

[teajay <te...@cl...>]

Hi, All,

It took me some time to figure out how to get rid of the modifications
necessary to the spirit core for the keyword parsing constructs I
implemented, but I finally got the issue settled. Everything now cleanly
fits in the spirit repository.

If you wish to integrate the keyword parser into the boost trunk, or if
you use the keyword parser, prefer this version of the patch.

Regards,

Thomas Bernard