Add syntax files from upstream vim repository

ftplugin/csc.vim

@@ -0,0 +1,31 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'vim') == -1
+  
+" Vim filetype plugin file
+" Language:	csc
+" Maintainer:	Dan Sharp <dwsharp at users dot sourceforge dot net>
+" Last Changed: 20 Jan 2009
+" URL:		http://dwsharp.users.sourceforge.net/vim/ftplugin
+
+if exists("b:did_ftplugin") | finish | endif
+let b:did_ftplugin = 1
+
+" Make sure the continuation lines below do not cause problems in
+" compatibility mode.
+let s:save_cpo = &cpo
+set cpo-=C
+
+if exists("loaded_matchit")
+    let b:match_words=
+	\ '\<fix\>:\<endfix\>,' .
+	\ '\<if\>:\<else\%(if\)\=\>:\<endif\>,' .
+	\ '\<!loopondimensions\>\|\<!looponselected\>:\<!endloop\>'
+endif
+
+" Undo the stuff we changed.
+let b:undo_ftplugin = "unlet! b:match_words"
+
+" Restore the saved compatibility options.
+let &cpo = s:save_cpo
+unlet s:save_cpo
+
+endif