Add syntax files from upstream vim repository

syntax/rcslog.vim

@@ -0,0 +1,29 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'vim') == -1
+  
+" Vim syntax file
+" Language:	RCS log output
+" Maintainer:	Joe Karthauser <joe@freebsd.org>
+" Last Change:	2001 May 09
+
+" quit when a syntax file was already loaded
+if exists("b:current_syntax")
+  finish
+endif
+
+syn match rcslogRevision	"^revision.*$"
+syn match rcslogFile		"^RCS file:.*"
+syn match rcslogDate		"^date: .*$"
+
+" Define the default highlighting.
+" Only when an item doesn't have highlighting yet
+
+hi def link rcslogFile		Type
+hi def link rcslogRevision	Constant
+hi def link rcslogDate		Identifier
+
+
+let b:current_syntax = "rcslog"
+
+" vim: ts=8
+
+endif