modify version
add pow
add ios_armv7s platform
impl dns walk
add whois demo
add whois: ping
modify ping.dat
modify whois demo
rebuild makefile
add some demo files
add test_cpp.cpp
split plat and arch from config
rebuild config and platform for makefile
install to bin/arch directory
add make prefix
modify make prefix & lipo
fix TA_xxx => TB_xxxB
impl vector copy
add ldid sign for ios
optimatize find algorithm