Hello,

I use EUDC to search entries from LDAP.  I routinely search for a
username to retrieve the email address.  The LDAP server contains lots
of entries, and a username is often a prefix of lots of other usernames.
For example, when I search for the "js" username, I don't want to have
dozens of results of usernames that just start with "js" like "jsmith"
or "jscott".

However, that's what eudcb-ldap does: for reasons I don't understand,
the eudc-ldap-format-query-as-rfc1558 defun automatically appends the
wildcard character "*" to the last field.  This is annoying as I get
dozens of results.  I want to have the choice of adding a wildcard or
not to my searches, I don't want that imposed on me.

I propose the attached patch to fix this behaviour.  The result is a
simplification of the existing code.  Could you please review it?