environmental variables.

to be unique.

Remove MD5 and SHA1 options (both are now always on).  Rename
functions to be lutil_ instead of ldap_.
Create --enable-cleartext option.  Default is currently 'on'.

Update Install document with testing step and other minor changes.

to be used.  --without-subdir can be used to specify no subdirectory.

  default sysconfdir subdirectory is openldap instead of ldap.
    This removes conflicts with other ldap subsystems.  Should
    be configure option.
  *.conf files are now preserved.  A *.conf.default are always
    created with the latest conf.
  *.help and ldapfriendly are now placed in $(datadir)/$(ldap_subdir)
  updated man pages to reflect changes.