unsigned long -> uint32_t fixed #else's for WORDS_BIGENDIAN
unsigned long -> uint32_t
fixed #else's for WORDS_BIGENDIAN

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