make nrelease: get rid of cvsup; we no longer depend on it

[Chris Turner]

Sascha Wildner wrote:
Alexander Polakov schrieb:
You can use net/csup instead. It's in C with no extra crap.
Does it allow me fetching of the whole repo or checking out the tree only?

Sascha

whoops.. just RTFM'ed .. I think the FBSD handbook is out of date w/r/t
csup.1 .. and supposedly it does both.. haven't actually tried repo 
mirroring though.. see CVS MODE in the manual page.. didn't know about this