When authenticate() is called with the login column as 'login', not the actual column, logins were broken. Fixed.
When authenticate() is called with the login column as 'login', not the actual column, logins were broken. Fixed.

Signed-off-by: Ben Corlett <9fc0b04505a02c47a9e61f970105683228d674a6@me.com>

halfik/sentry,BootstrapCMS/Sentry,cartalyst/sentry,anndro/SentryLdap,jgodish/sentry,intrip/sentry,gazsp/sentry