clearBufferuiv method
Implementation
void clearBufferuiv(int buffer,int drawbuffer, int value){
  startCheck('clearBufferuiv');
  Pointer<Uint32> id = calloc<Uint32>(value);
  gl.glClearBufferuiv(buffer,drawbuffer,id);
  checkError('clearBufferuiv');
  calloc.free(id);
}