Merge branch 'ab/cvsserver'

* ab/cvsserver:
  git-cvsserver: test for pserver authentication support
  git-cvsserver: document making a password without htpasswd
  git-cvsserver: Improved error handling for pserver
  git-cvsserver: indent & clean up authdb code
  git-cvsserver: use a password file cvsserver pserver
  git-cvsserver: authentication support for pserver