hghave: add cvsnt
cvsnt is a maintained commercial fork of cvs
https://en.wikipedia.org/wiki/CVSNT
It is possible to build a version of it from sources (github),
it requires libpcre and libltdl (libtool).
We already have a test that relates to cvsnt:
test-convert-cvsnt-mergepoints.t
cvsnt installs: cvs, cvslockd, cvsnt, cvsscript
I think we should definitely have a check for cvsnt because it makes
the version checks for cvs make a lot more sense.
When I use the version I built, cvs --version says:
"""
Concurrent Versions System (CVSNT) 2.5.05 (Gan) Build 3744 (Suite) (client/server)
CVSNT 2.5.05 (Apr 4 2016) Copyright (c) 2008 March Hare Software Ltd.
see http://www.march-hare.com/cvspro
CVS Copyright (c) 1989-2001 Brian Berliner, david d `zoo' zuhn,
Jeff Polk, and other authors
CVSNT Copyright (c) 1999-2008 Tony Hoyle and others
see http://www.cvsnt.org
Commercial support and training provided by March Hare Software Ltd.
see http://www.march-hare.com/cvspro
CVSNT may be copied only under the terms of the GNU General Public License v2,
a copy of which can be found with the CVS distribution.
The CVSNT Application API is licensed under the terms of the
GNU Library (or Lesser) General Public License.
Specify the --help option for further information about CVS
"""
cHg
===
A fast client for Mercurial command server running on Unix.
Install:
$ make
$ make install
Usage:
$ chg help # show help of Mercurial
$ alias hg=chg # replace hg command
$ chg --kill-chg-daemon # terminate background server
Environment variables:
Although cHg tries to update environment variables, some of them cannot be
changed after spawning the server. The following variables are specially
handled:
* configuration files are reloaded automatically by default.
* CHGHG or HG specifies the path to the hg executable spawned as the
background command server.
The following variables are available for testing:
* CHGDEBUG enables debug messages.
* CHGSOCKNAME specifies the socket path of the background cmdserver.