SRT: Upgrade libsrt from 1.4.1 to 1.5.1. v6.0.12 (#3362)

Co-authored-by: winlin <winlin@vip.126.com>

trunk/3rdparty/srt-1-fit/scripts/maf.vim

@@ -0,0 +1,38 @@
+"
+" SRT - Secure, Reliable, Transport
+" Copyright (c) 2020 Haivision Systems Inc.
+"
+" This Source Code Form is subject to the terms of the Mozilla Public
+" License, v. 2.0. If a copy of the MPL was not distributed with this
+" file, You can obtain one at http://mozilla.org/MPL/2.0/.
+"
+" This file describes MAF ("manifest") file syntax used by
+" SRT project.
+"
+
+
+if exists("b:current_syntax")
+  finish
+endif
+
+" conditionals
+syn match mafCondition  contained " - [!A-Za-z].*"hs=s+2
+
+" section
+syn match mafSection "^[A-Z][0-9A-Za-z_].*$" contains=mafCondition
+syn match mafsection "^ .*$" contains=mafCondition
+
+" comments
+syn match  mafComment		"^\s*\zs#.*$"
+syn match  mafComment		"\s\zs#.*$"
+syn match  mafComment	contained	"#.*$"
+
+
+" hilites
+
+hi def link mafComment Comment
+hi def link mafSection Statement
+hi def link mafCondition Number
+
+
+let b:current_syntax = "maf"