Update libsrtp to version 2.0

srtp/timing

Index: srtp/timing
diff --git a/srtp/timing b/srtp/timing
deleted file mode 100644
index 41d1e60da35e7be04b8db509b0a8bc4e0def5ef0..0000000000000000000000000000000000000000
--- a/srtp/timing
+++ /dev/null
@@ -1,36 +0,0 @@
-# timing.plt
-# 
-# gnuplot script file for plotting the output generated by srtp_driver -t
-# 
-# David A. McGrew
-# Cisco Systems, Inc.
-#
-set xrange [0:2500]
-set term pict "Times-Roman" 9
-#
-# plot authentication-only data
-#
-set title "Authentication Only"
-set ylabel "Megabits per second"
-set xlabel "Octets in packet"
-set yrange [0:2000]
-set output "plot-auth.pict"
-plot "timing.dat" index 0 title "HMAC SHA1" with lines, "timing.dat" index 1 title "TMMH/AES" with lines, "timing.dat" index 2 title "TMMH/SEAL" with lines
-#
-# plot encryption-only data
-#
-set title "Encryption Only"
-set ylabel "Megabits per second"
-set xlabel "Octets in packet"
-set output "plot-enc.pict"
-set yrange [0:1200]
-plot "timing.dat" index 3 title "SEAL" with lines, "timing.dat" index 4 title "AES ICM" with lines
-#
-# plot encryption and authentication data
-#
-set title "Encryption and Authentication"
-set ylabel "Megabits per second"
-set xlabel "Octets in packet"
-set yrange [0:1000]
-set output "plot-enc-auth.pict"
-plot "timing.dat" index 5 title "TMMH/SEAL" with lines, "timing.dat" index 6 title "TMMH/AES" with lines, "timing.dat" index 7 title "HMAC/AES" with lines