Pidgin cannot find out the correct XMPP server to connect to, without SRV DNS lookups

Google recently broke XMPP for many accounts. Without gtalk support in Pidgin, I am unable to connect to my Google account. Please (re-)add Pidgin support for gtalk.

Related issues

Related to #8573
Blocked by #6070

Original created by @runa on 7453 (Redmine)

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