Issue #1739986 by RobLoach, pwolanin, sun, Berdir, moshe weitzman, andypost, dcam: Fixed fallback in backdrop_get_hash_salt(), move it to bootstrap.inc, use instead of ['hash_salt'].
Issue #1034828 by Steven Jones, Bladedu, brunodbo | Rob C: Fixed 'No active batch' error after user cancelling own account.
Issue #1575060 followup by SebCorbin, andypost: Second attempt to fix broken ajax_html_ids for forms with file element (encoding=multipart/form-data).
Issue #670454 by pwolanin, cburschka, effulgentsia: Support HTTP Authorization in CGI environments.