misc/ctm 2.0 MidnightBSD

CTM was originally "CVS Through eMail", but has since changed scope to be much more general.

CTM is now meant to be the definitive way to make and apply a delta between two versions of a directory tree.

There are two parts to this, making the delta and applying it. These are two entirely different things. CTM concentrates the computation-burden on the generation of the deltas, as a delta very often is applied more times than it is made. Second CTM tries to make the minimal size delta.