Reviewed by Trey and Darin.

	Minor fixes required to fix these bugs:

	3124933 - abcnews.com leads to empty window with sheet complaining about javascript: URL
	3091248 - picture does not show up in window from epinions

	* CacheLoader.subproj/WebResourceResponse.h: Don't include uninstalled headers
	in this private but installed header.
        * ProtocolHandlers.subproj/WebAboutProtocolHandler.m:
        (-[WebAboutProtocolHandler setResponseMetadata:]): "about:blank"
	should be a blank html document, not a blank plain text document.
        * Misc.subproj/WebNSURLExtras.h:
        * Misc.subproj/WebNSURLExtras.m:
        (-[NSString _web_shouldLoadAsEmptyDocument]): New method.
	* English.lproj/StringsNotToBeLocalized.txt: Updated.

WebCore:

        Reviewed by Trey and Darin.

	- fixed 3124933 - abcnews.com leads to empty window with sheet complaining about javascript: URL
	- fixed 3091248 - picture does not show up in window from epinions


        * khtml/ecma/kjs_window.cpp:
        (Window::get): Put back document-creating code that was in #if
	!APPLE_CHANGES.
	(Window::isSafeScript): Extend access to a window that was opened
	to no URL or to about:blank by the active window.
        (shouldLoadAsEmptyDocument): Helper for the above.
        (WindowFunc::tryCall): Update APPLE_CHANGES comments - now it's
	clear we don't need to create a document in a fresh window
	(accessing document will take care of that), and that it will be
	counter-productive, possibly adding a useless entry to the
	back/forward list.
        * khtml/khtml_part.cpp:
        (KHTMLPart::begin): If we're not loading a URL, make a dummy
	document (the call will check if we have a dummy document
	already).
        * kwq/KWQKHTMLPart.mm:
	(KWQKHTMLPart::createEmptyDocument): Isntead of setting up a
	half-assed document, ask bridge to synchronously load a fully
	assed (but empty) document. Renamed from createDummyDocument.
        * kwq/KWQKHTMLPartBrowserExtension.mm:
        (KHTMLPartBrowserExtension::openURLRequest): Decode script. Also,
	check if return value is a string - if so, write it into the
	document. Maybe we want this to be more general.
        * kwq/KWQKURL.mm:
        (KURL::KURL): Changed to successfully resolve absolute URLs
	against an empty base URL.
        * kwq/WebCoreBridge.h: prototyped new
	loadEmptyDocumentSynchronously method.

WebKit:

        Reviewed by Darin and Trey.

	- fixed 3124933 - abcnews.com leads to empty window with sheet complaining about javascript: URL
	- fixed 3091248 - picture does not show up in window from epinions
	- made "about:blank" load synchronously, which I'm told is required by some sites.

        * WebCoreSupport.subproj/WebBridge.m:
        (-[WebBridge createWindowWithURL:frameName:]): If the URL is nil
	or empty, pass a nil request - otherwise WebBrowser will try to
	load it, resulting in an extra back/forward list entry.
        (-[WebBridge loadEmptyDocumentSynchronously]): Tell the frame to
	load a request with an empty URL - this will cause a synchronous
	load of an empty html document
        * WebView.subproj/WebBaseResourceHandleDelegate.h:
        * WebView.subproj/WebBaseResourceHandleDelegate.m:
	(-[WebBaseResourceHandleDelegate loadWithRequest:]): Split off
	startLoading: part of method to allow behavior to be subclassed.
        (-[WebBaseResourceHandleDelegate startLoading:]):
        * WebView.subproj/WebDataSourcePrivate.m:
        (-[WebDataSource _commitIfReady:]): Lie and claim the URL is
	"about:blank" if it's really empty to avoid confusing WebCore.
        * WebView.subproj/WebFramePrivate.m:
        (-[WebFrame _transitionToCommitted:]): Don't put the empty URL in
	global history.
        (-[WebFrame
	_checkNavigationPolicyForRequest:dataSource:andCall:withSelector:]):
	Don't check policy if URL is empty - this is likely to confuse the
	client and we know what the right behavior here is.
        * WebView.subproj/WebMainResourceClient.m:
	(-[WebMainResourceClient startLoading:]): Try to load
	"about:blank" and the empty URL synchronously, bypassing
	WebFoundation.
        (-[WebMainResourceClient continueAfterContentPolicy:response:]): Ditto.
        (-[WebMainResourceClient setDefersCallbacks:]): Ditto.
        * English.lproj/StringsNotToBeLocalized.txt: Updated.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@3124 268f45cc-cd09-0410-ab3c-d52691b4dbfc