Silence idlw*.el compilation.

Silence idlw*.el compilation.

* lisp/progmodes/idlw-complete-structtag.el: Remove unused dec `name'.

* lisp/progmodes/idlwave.el (idlwave-routine-entry-compare-twins)
(idlwave-study-twins): Prefix dynamic local variable `name'.
(idlwave-routine-twin-compare): Update for above change.

* lisp/progmodes/idlw-help.el (idlwave-do-mouse-completion-help):
Prefix dynamic local variables `name', `kwd', and `link'.
* lisp/progmodes/idlw-shell.el (idlwave-shell-complete-execcomm-help):
* lisp/progmodes/idlw-complete-structtag.el
(idlwave-complete-structure-tag-help):
* lisp/progmodes/idlwave.el (idlwave-complete-sysvar-help)
(idlwave-complete-sysvar-tag-help)
(idlwave-complete-class-structure-tag-help):
Update for above name changes.