### Please describe the problem.
Git-Annex crashes when configuring jabber account with foo.bar@googlemail.com

### What steps will reproduce the problem?
Configure the Jabber Account with foo.bar@googlemail.com instead of foo.bar@gmail.com. The domain googlemail was used for a long time in germany because of a license issue. 

### What version of git-annex are you using? On what operating system?
Mac OS X - 10.8.3 Mountain Lion

Version: 4.20130709-g18e5f43 

Build flags: Assistant Webapp Pairing Testsuite S3 WebDAV FsEvents XMPP DNS


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[[!tag design/assistant]]