* js2-mode.el (js2-mode): Use cursor-sensor-mode if available.

* js2-mode.el (js2-mode): Use cursor-sensor-mode if available.

(js2-export-node): Fix apparent paren typo.
(js2-get-token-internal-1): Remove unused var `quote-char'.
(js2-clear-face): Also remove cursor-sensor-functions.
(js2-parse-primary-expr): Remove unused var `pn'.
(js2-parse-legacy-array-comp): Remove unused var `first'.
(js2-mode-show-node, js2-mode-show-warn-or-err): Use cursor-sensor-functions
if available.
(js2-mode-hide-overlay, js2-echo-error): Adapt to new calling convention.
(js2-echo-help): Declare obsolete.
(js2-mode-extend-comment): Look for the appropriate property.