Replace <sys/param.h> with <limits.h> and other less dirty headers where
possible. Annotate <sys/param.h> lines with their current reasons. Switch
to PATH_MAX, NGROUPS_MAX, HOST_NAME_MAX+1, LOGIN_NAME_MAX, etc. Change
MIN() and MAX() to local definitions of MINIMUM() and MAXIMUM() where
sensible to avoid pulling in the pollution. These are the files confirmed
through binary verification.
ok guenther, millert, doug (helped with the verification protocol)

Rename a bunch of variables and functions, removing the cvs_/rcs_
prefixes to reduce differences between cvs and rcs files.

"yes!" nicm

general includes cleanup sweep. ok joris@ niallo@

commit the new opencvs code, i have been hacking on
this for the past 2 weeks now and it should go in at
the start of the hackathon so others can help out.

this code is a lot safer, smarter, faster and best of
all it is actually doing what it is suppose to do!

basic checkout, update, status, diff and commit are
working in local mode only.
there is no support for any remote setups now.

make sure we add the correct name mkstemp(3) creates for us
to the worklist of temporary files.

this way we definatly don't leave any files behind in /tmp.

tested & okay niallo@

no need for one of the volatile

- make cvs_worklist members volatile.

from deraadt@

add a worklist framework, which will be used for atomic operations on
files.

suggested and help by deraadt@