adapt curl hiperfifo.c example
properly wrap curl_multi_socket_action

use Libevent in examples/omulti.ml
test perform and socket_all methods
more comments for Curl.Multi functions
use CURL_CSELECT_*, add Unix.select loop to omulti
compile exampels with threads too
fix compilation, use events_base
properly use blocking_section for sock_cb
+ Multi.set_timer_function
less allocations on callbacks

multi handle is available from closure at caml side
update example
+ Multi.timeout, check mcode
update example
Merge asynchronous interface branch
do not build examples/omulti by default, update README
simplify examples/Makefile
add .gitignore