- Cleaned up the cursor code

- Renamed gui -> _gui in EngineState, for consistency
- Added a reference to SciGuiCursor in EngineState, to be used by current code
- Renamed setCursorHide -> hideCursor, setCursorShow -> showCursor
- Moved the cursor zone limiting code inside SciGuiCursor. This code is currently not functioning, as we need to call refreshPosition() before each updateScreen() call to limit the cursor position.

svn-id: r44760

engines/sci/gui/gui.cpp

@@ -460,11 +460,11 @@ void SciGui::setNowSeen(reg_t objectReference) {
 	_gfx->SetNowSeen(objectReference);
 }
 
-void SciGui::setCursorHide() {
+void SciGui::hideCursor() {
 	_cursor->hide();
 }
 
-void SciGui::setCursorShow() {
+void SciGui::showCursor() {
 	_cursor->show();
 }