#73884 by RobRoy, various code cleanup.

includes/form.inc

modules/aggregator/aggregator.module

modules/book/book.module

modules/comment/comment.module

modules/filter/filter.module

modules/forum/forum.module

modules/locale/locale.module

modules/poll/poll.module

modules/profile/profile.module

modules/search/search.module

modules/user/user.module