mergemaster improvement (auto-update for not modified files)

[Denis Peplin]

Hello!


> There is one major problem here:
> This can be done in single-user mode only if your
> have local CVS repository, because if local CVS is
> not exist, anoncvs is used.
> 
> Possible solutions:

There was some points that I missed:
> 1. Pre-checkout files in pre-buildworld mode.
pre-buildworld is executed in single-user mode too,
so it is impossible to do pre-checkout in this mode.

> 2. Setup CVSup collection for subset of required files
> (is it possible?), and then keep this small collection
> up-to-date locally.
src-etc cvs collection already here.