implement pybullet.changeTexture. For now, the width/height has to match the target texture unique id, otherwise crashes may happen (a check for width/height match will be added)

See also examples\pybullet\examples\changeTexture.py

examples/SharedMemory/SharedMemoryPublic.h

@@ -67,6 +67,7 @@ enum EnumSharedMemoryClientCommand
 	CMD_CREATE_MULTI_BODY,
 	CMD_REQUEST_COLLISION_INFO,
 	CMD_REQUEST_MOUSE_EVENTS_DATA,
+	CMD_CHANGE_TEXTURE,
     //don't go beyond this command!
     CMD_MAX_CLIENT_COMMANDS,
     
@@ -161,6 +162,7 @@ enum EnumSharedMemoryServerStatus
 		CMD_REQUEST_COLLISION_INFO_COMPLETED,
 		CMD_REQUEST_COLLISION_INFO_FAILED,
 		CMD_REQUEST_MOUSE_EVENTS_DATA_COMPLETED,
+		CMD_CHANGE_TEXTURE_COMMAND_FAILED,
         //don't go beyond 'CMD_MAX_SERVER_COMMANDS!
         CMD_MAX_SERVER_COMMANDS
 };