[Ctags-vms] enabling regex

[Samuel Ferencik]

Hello Zoltan,

ctags 5.7 for VMS does not currently have support for regular
expressions. This means that COBOL, Javascript and other sources
cannot be indexed.

Darren has informed me a while ago that the SVN for ctags actually
contains the regex source module. With this, it is trivial to add
support to regular expressions. I have done this myself (rebuilt ctags
with regex), but I think it would be beneficial if the official
version available on polarhome also had this feature.

If you agree that this can/should be done, I am willing to help. It
only involved a couple of changes when I did it (though I don't know
the process you use to create a "release").

Please let me know what you think about it, and if you think I could
help in any way.

Thanks,
Sam