Enable AES256 for SRTP after ZRTP negociation but keep AES128 as default

- setting in sip section srtp_crypto_suite in the configuration file
+ update ms

coreapi/misc.c

@@ -1533,7 +1533,7 @@ void linphone_core_set_tone(LinphoneCore *lc, LinphoneToneID id, const char *aud
 }
 
 const MSCryptoSuite * linphone_core_get_srtp_crypto_suites(LinphoneCore *lc){
-	const char *config=lp_config_get_string(lc->config,"sip","srtp_crypto_suites","AES_CM_128_HMAC_SHA1_80, AES_CM_128_HMAC_SHA1_32");
+	const char *config=lp_config_get_string(lc->config,"sip","srtp_crypto_suites","AES_CM_128_HMAC_SHA1_80, AES_CM_128_HMAC_SHA1_32, AES_CM_256_HMAC_SHA1_80, AES_CM_256_HMAC_SHA1_32");
 	char *tmp=ms_strdup(config);
 	char *sep;
 	char *pos;

mediastreamer2 @ a8c19582

-Subproject commit 3389c9cc5f6b0c78ca237cc1ca84bc4e01e24a47
+Subproject commit a8c195828c3a225e01e154fdbbf08636b1e28be8