[Pidgin] #15747: Update user guide to include setup for GSSAPI/Kerberos authentication

[Pidgin]

#15747: Update user guide to include setup for GSSAPI/Kerberos authentication
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 Reporter:  ngroot       |      Owner:
     Type:  enhancement  |     Status:  new
Milestone:               |  Component:  libpurple
  Version:  2.10.7       |   Keywords:  documentation kerberos gssapi
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 I was trying to get Pidgin to use GSSAPI/Kerberos authentication.  From
 some messages on the mailing list, it appeared to support it, but I could
 not find any documentation on how to get it working.

 I finally discovered that there is no explicit way to tell Pidgin to do
 this, and that if I installed the SASL GSSAPI libraries, it would try
 Kerberos authentication first.

 Could this be made explicit in the User's Guide, so that other folks don't
 have to go poking through the libpurple Jabber module source to figure it
 out as well?  Thanks!

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Ticket URL: <https://developer.pidgin.im/ticket/15747>
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