lo32() -> low32()
lo32() -> low32()

cuijinquan/libsrtp,ksophocleous/libsrtp,yarrcc/libsrtp-ios,Distrotech/libsrtp,persmule/libsrtp,Distrotech/libsrtp,yarrcc/libsrtp-ios,cuijinquan/libsrtp,cuijinquan/libsrtp,persmule/libsrtp,persmule/libsrtp,yarrcc/libsrtp-ios,ksophocleous/libsrtp