fixxing include flag order fix, ensure we don't build with installed versions of headers
switching away from using the post() interface to pass event to handlers
es_handlers now extend gr_basic_block so they can use normal msg_connect functionality as well
install swig files
install swig files
 - es_handler is now a gr_basic_block
 - queue now stores handlers as gr_basic_block_sptrs
 - deadlock bug fixxed in es_queue