* cedet/semantic/util.el (semantic--completion-cache): Move to
semantic.el.
(semantic-symbol-start): Remove unneeded function.
* cedet/semantic.el (semantic--completion-cache): Move here from
semantic/util.el
(semantic-clear-toplevel-cache, semantic--set-buffer-cache)
(semantic-fetch-tags): Reset semantic--completion-cache.
(semantic-force-refresh): New function
(semantic-mode-map): New variable.