Call the program "OsmoSIPcon" (also in vty)

It's confusing to access the telnet interface and then see a prompt
that's not like the program name

Change-Id: Iba20c1c90e528d08bd362be39d86317569c253e6

src/main.c

@@ -78,7 +78,7 @@ static const struct log_info mncc_sip_info = {
 
 static void print_help(void)
 {
-	printf("Osmo MNCC to SIP bridge\n");
+	printf("OsmoSIPcon: MNCC to SIP bridge\n");
 	printf("  -h --hekp\tthis text\n");
 	printf("  -c --config-file NAME\tThe config file to use [%s]\n", config_file);
 }

src/vty.c

@@ -51,7 +51,7 @@ static struct cmd_node app_node = {
 };
 
 static struct vty_app_info vty_info = {
-	.name		= "OsmoMNCC",
+	.name		= "OsmoSIPcon",
 	.version	= PACKAGE_VERSION,
 	.go_parent_cb	= mncc_vty_go_parent,
 	.is_config_node	= mncc_vty_is_config_node,