Merge pull request #59 from librehat/master

Fix mingw64 compiling errors
use size_t instead
fix ss_decrypt_all failed ,cause server crash
Merge pull request #63 from ftao/debug

fix problem when  ss_decrypt_all return NULL , server crash
clean up
tune resolve timer
update asyncns
fix compatibility issue
fix the segfault
make compiler stop complaining
fix udprelay
Merge pull request #66 from clowwindy/master

Fix compatibility issues
update asyncns
fix the segfault
fix udprelay
Merge branch 'asyncns' of github.com:madeye/shadowsocks-libev into asyncns
Bump version
update makefile
update readme
Merge pull request #67 from madeye/asyncns

Enhance asyncns to reduce the latency