GSSAPI signing/encryption for unsuspectingly applications (its not a bug)

[mikbec <mikbec@web.de>]

Patch related to "(ITS#6110) GSSAPI signing/encryption for
unsuspectingly applications" is more an enhancement than a bug report.

Please have a look at patch on 
ftp://ftp.openldap.org/incoming/mike-becher-090512.libraries-libldap.patch
or ITS report on 
http://www.openldap.org/its/index.cgi/Incoming?id=6110;selectid=6110

In short that patch:
1) adds call of ldap_gssapi_bind_s() at the beginning of 
ldap_sasl_interactive_bind_s() which can be turn on or off by an GSSAPI 
OPTION (manual update of ldap.conf (5) included) to provide GSSAPI 
signing/encryption for applications that use (and only know) 
ldap_sasl_interactive_bind_s(),
2) adds the missed implementation of "switch off" functionality of all 
other GSSAPI OPTIONS.
3) corrects one string length problem in guess_service_principal() and
4) corrects one hostname resolving problem in guess_service_principal().

Sorry for that kind of announcement but I hope now it is on the right 
mailing list.

best regards
 Mike