Fix more regexp oddities

Problems reported by Mattias Engdegård in:
https://lists.gnu.org/archive/html/emacs-devel/2019-04/msg00178.html
* lisp/progmodes/sh-script.el (sh-get-indent-info):
Reorder skip-chars-forward arg so that it does not look like a regexp.
* lisp/progmodes/verilog-mode.el (verilog-sk-define-signal):
Fix typo: the string is not a regexp.
* lisp/vc/log-edit.el (log-edit-goto-eoh): Fix typo: stray ‘:’.
* lisp/xml.el (xml-parse-dtd): Avoid ‘-’ right after char class.

lisp/progmodes/verilog-mode.el

@@ -14263,7 +14263,7 @@ and the case items."
 (defun verilog-sk-define-signal ()
   "Insert a definition of signal under point at top of module."
   (interactive "*")
-  (let* ((sig-re "[a-zA-Z0-9_]*")
+  (let* ((sig-re "a-zA-Z0-9_")
 	 (v1 (buffer-substring
               (save-excursion
                 (skip-chars-backward sig-re)