Fix erroneous regular xpression in register.el. Thank you Stephen Turnbull. lisp/ChangeLog additions: 2012-12-14 Mats Lidell <matsl@xemacs.org> * register.el (describe-register-1): Fix erroneous regular expression. Thank you Stephen Turnbull. tests/ChangeLog additions: 2012-12-14 Mats Lidell <matsl@xemacs.org> * automated/register-tests.el: New. Test for register.el. Test case for bug in regular expression in describe-register-1