Don't show all credentials in debug log, only failures.

James Moger

2011-06-18 767eb537d28dccf73c78796b7d6dd27fe7073d66

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## Git:Blit realm file format: username=password,\#permission,repository1,repository2... 
#Tue Jun 07 20:57:42 EDT 2011 
admin=admin,\#admin