Export session utility functions
Other auth solutions will want to reuse these functions. These should
probably be moved to a separate auth utility module but this seems like
the most prudent course of action.
COUCHDB-2491
diff --git a/src/couch_httpd_auth.erl b/src/couch_httpd_auth.erl
index e1af621..b6733cb 100644
--- a/src/couch_httpd_auth.erl
+++ b/src/couch_httpd_auth.erl
@@ -21,6 +21,11 @@
-export([cookie_auth_header/2]).
-export([handle_session_req/1, handle_session_req/2]).
+-export([authenticate/2, verify_totp/2, maybe_upgrade_password_hash/6]).
+-export([ensure_cookie_auth_secret/0, make_cookie_time/0]).
+-export([cookie_auth_cookie/4, cookie_scheme/1]).
+-export([auth_name/1, maybe_value/3]).
+
-import(couch_httpd, [header_value/2, send_json/2,send_json/4, send_method_not_allowed/2]).
-compile({no_auto_import,[integer_to_binary/1]}).
