Add syntax files from upstream vim repository

syntax/tar.vim

@@ -0,0 +1,21 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'vim') == -1
+  
+" Language   : Tar Listing Syntax
+" Maintainer : Bram Moolenaar
+" Last change: Sep 08, 2004
+
+if exists("b:current_syntax")
+ finish
+endif
+
+syn match tarComment '^".*' contains=tarFilename
+syn match tarFilename 'tarfile \zs.*' contained
+syn match tarDirectory '.*/$'
+
+hi def link tarComment	Comment
+hi def link tarFilename	Constant
+hi def link tarDirectory Type
+
+" vim: ts=8
+
+endif