Delete ldap_build_filter(), it's broke.

include/ac/bytes.h

include/ac/errno.h

include/ac/regex.h

include/ac/signal.h

include/ac/socket.h

include/lber.h

include/ldap.h

include/ldap_defaults.h

include/ldap_pvt.h

include/ldap_pvt_thread.h

include/ldap_pvt_uc.h

include/ldap_utf8.h

include/ldbm.h

include/lutil_sha1.h

include/queue-compat.h

include/rewrite.h

libraries/libldap/getfilter.c