Rewrote this shellscript.  It now takes multiple optional arguments for which there are sensible
defaults.  Defaults may be changed for use at other sites.  For example, the default for "ORGANIZATION"
is "GWDG", which will not make sense elsewhere.

This shellscript now puts together a string which is piped to `certtool' when generating a certificate.
This can save the user typing in responses and if the defaults are set appropriately, the data won't need
to be typed in on the command-line.

In addition, the `gwirdsif.Users' database table is queried for the highest value of `user_id'.
By default, it's incremented and used as the value of the `UID' field of the certificate.
Initial version.
Moved.
Added `slscutil.texi' to `SOURCES_MANUAL'.
Merged in changes from development repository.
No significant changes.
No significant changes.