HTMLDocument::Close inside a <script>

	I think it's going to work this time. The key was to hook up the
	KHTML submitFormAgain machinery.

        * khtml/khtml_part.cpp: (KHTMLPart::submitForm): Take out the APPLE_CHANGES
	ifdef that was disabling the submitFormAgain logic.
        * kwq/KWQKHTMLPart.h: Remove submitForm(), because openURLRequest() handles it fine.
        * kwq/KWQKHTMLPart.mm: (KWQKHTMLPart::openURLRequest): Move the logic for handling
	POST here from submitForm() and remove submitForm().

        * kwq/KWQSlot.mm:
        (KWQSlot::KWQSlot): Add support for the submitFormAgain slot.
        (KWQSlot::call): Ditto.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@2627 268f45cc-cd09-0410-ab3c-d52691b4dbfc