Bug 921529 - [email] Make ActiveSync autodiscover "not-authorized" failure non-fatal so that we still perform an ISPDB lookup. r=squib

land https://github.com/mozilla-b2g/gaia-email-libs-and-more/pull/252
Merge pull request #12627 from asutherland/email-autoconfig-non-fatal

Bug 921529 - [email] Make ActiveSync autodiscover "not-authorized" failure non-fatal so that we still perform an ISPDB lookup. r=squib