Merge remote branch 'origin/master'

* origin/master:
  mail-merge: remind people to cd to the examples
  ldapfinger: show how to use ldaps and ldap-too
  Instructions for using mail-merge
  Install scripts read-only
  Update Makefile and README to reflect removed scripts
  Remove list-members
  Remove check-host script
  Remove card-access script
  Optionally show queries used in list-of-lists-updater
  Remove pag-screen, since it's maintained elsewhere
  Add sendmail-based mail merger
  Refactor out the actual mail-sending