r2401: make our LDAP server useable:

r2401: make our LDAP server useable:
- we need to mark the fd event as writable otherwise we'll never senda packet to the client
- a search response have to ended by a LDAP result message
- return currentTime, supportedLDAPVersion and dnsHostName for testing

ldap -x -s base -h ldap://localhost/ is now works against our LDAP server

metze
(This used to be commit 3a9ca351166cf56de878e4408e221df299271c32)