Fix hide mouse cursor on linux.

Fix emulator window position when rendering to main on linux.
Allow building against wxWidgets 2.9.3 on linux.

CMakeLists.txt

@@ -489,8 +489,13 @@ if(NOT DISABLE_WX)
 			ERROR_QUIET
 			)
 		message("Found wxWidgets version ${wxWidgets_VERSION}")
-		if(${wxWidgets_VERSION} VERSION_LESS "2.9.4")
-			message("At least 2.9.4 is required; ignoring found version")
+		if(UNIX AND NOT APPLE)
+			set(wxMIN_VERSION "2.9.3")
+		else()
+			set(wxMIN_VERSION "2.9.4")
+		endif()
+		if(${wxWidgets_VERSION} VERSION_LESS ${wxMIN_VERSION})
+			message("At least ${wxMIN_VERSION} is required; ignoring found version")
 			unset(wxWidgets_FOUND)
 		endif()
 	endif(wxWidgets_FOUND)