Modify about window to take an app signature.

* Grabs the app icon and version from the resource file.
* Allow you to specify the copyright holder instead of hardcoding
  "Haiku, Inc."
* Support multiple extra copyright fields.
* Modify BAlert to take a custom icon.
* Set the custom icon of the BAlert to the app icon.
* Also set the app version.

* Convert BAboutWindow to derive from BWindow
* Place a 128x128 icon and fill out a scrolling BTextView
  with options such as authors, version history, copyright,
  license, etc. Still needs some work but is coming along.

* Add the word Version to the version line, i8n'ed of course,
  and tweak the info box and default sizes.

headers/private/shared/AboutWindow.h

@@ -1,28 +1,45 @@
 /*
- * Copyright 2007-2009 Haiku, Inc.
+ * Copyright 2007-2012 Haiku, Inc.
  * Distributed under the terms of the MIT License.
- *
- * Authors:
- *		Ryan Leavengood, [email protected]
  */
 #ifndef B_ABOUT_WINDOW_H
 #define B_ABOUT_WINDOW_H
 
 
-#include <String.h>
+#include <GroupView.h>
+#include <Window.h>
+#include <View.h>
 
 
-class BAboutWindow {
-	public:
-		BAboutWindow(const char *appName, int32 firstCopyrightYear,
-			const char **authors, const char *extraInfo = NULL);
-		virtual ~BAboutWindow();
+class AboutView;
+class BPoint;
 
-		void Show();
+class BAboutWindow : public BWindow {
+ public:
+							BAboutWindow(const char* appName,
+								int32 firstCopyrightYear,
+								const char** authors = NULL,
+								const char* extraInfo = NULL);
+							BAboutWindow(const char* appName, 
+								const char* signature);
+	virtual					~BAboutWindow();
 
-	private:
-		BString* 		fAppName;
-		BString*		fText;
+			void			AddDescription(const char* description);
+			void			AddCopyright(int32 firstCopyrightYear,
+								const char* copyrightHolder,
+								const char** extraCopyrights = NULL);
+			void			AddAuthors(const char** authors);
+			void			AddSpecialThanks(const char** thanks);
+			void			AddVersionHistory(const char** history);
+			void			AddExtraInfo(const char* extraInfo);
+
+			BPoint			AboutPosition(float width, float height);
+
+ protected:
+			void			_Init(const char* appName, const char* signature);
+
+ private:
+			AboutView*		fAboutView;
 };
 
 #endif	// B_ABOUT_WINDOW_H