Clean up includes. Replace #if checks with #ifdef for autoconf defines.
Clean up includes.
Replace #if checks with #ifdef for autoconf defines.

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