packages and TeXLive revisions

[Brook Milligan <brook%nmsu.edu@localhost>]

I notice that a number of (but I don't believe all of) the TeXLive packages, 
i.e., those in print/tex-* indicate a TeXLive revision either as a comment in 
the Makefile or as an defined Makefile variable.  I have some new packages that 
I wish to commit, but I am not sure what to make of the revision information.  
In general, I don't seem to have any such information for these packages, so I 
am wondering where this comes from, what it means, and if I am missing 
something as I prepare these packages.

Thanks for your help.

Cheers,
Brook