introduction of pid/agrs parameters to the test-suite slapd.conf files;
creation of sub-directory test/var for storage of pid/args files during test;
update of the slapd and slapd.conf man pages.
(The change reduces dependency on ldapconfig.h, since SLAPD_PIDEXT
and SLAPD_ARGSEXT are deleted from the code.)
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.
