Debugged cursor handling code. AFAICT it works properly

Retooled ScreenDriver mouse emu code - polls the mouse now.
Added mouse wheel support to ScreenDriver and ViewDriver emu code
AppServer handles mouse wheel messages now
Partially documented ScreenDriver code with DisplayDriver docs
Added ViewDriver::FillPolygon
Server has reached same functionality as prototype #3


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2794 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/servers/app/server/CursorData.cpp

@@ -39,24 +39,24 @@ int8 default_cursor_data[] = {
 144,128,	// *--*----*-------
 105,0,		// -**-*--*--------
 
-0,6,		// -----**---------
+6,0,		// -----**---------
 0,0,		// ----------------
 0,0,		// ----------------
 0,0,		// ----------------
 
 // default_cursor mask - black pixels are always opaque
-0,0,
-255,224,
-255,224,
-255,128,
 255,224,
 255,240,
 255,240,
 255,224,
+255,240,
+255,248,
+255,248,
+255,240,
+255,224,
+255,192,
 255,128,
-255,0,
-255,0,
-255,0,
+105,0,
 
 0,0,
 0,0,