Jasig/cas — pull request #322 by jtgasper3 (2013-09-23 15:10:07+00:00)
Title: CAS-1166/1168 (4.x) login form is not shown on error of Spnego/login form is not shown on error of Spnego

This fix will essentially revert CAS-1065, but allow implementers to optionally invoke it. Without this fix SPNEGO will not display the CAS login form for clients that aren't setup to participate in SPNEGO handshaking.