Add syntax files from upstream vim repository

compiler/sass.vim

@@ -0,0 +1,34 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'vim') == -1
+  
+" Vim compiler file
+" Compiler:	Sass
+" Maintainer:	Tim Pope <vimNOSPAM@tpope.org>
+" Last Change:	2016 Aug 29
+
+if exists("current_compiler")
+  finish
+endif
+let current_compiler = "sass"
+
+if exists(":CompilerSet") != 2		" older Vim always used :setlocal
+  command -nargs=* CompilerSet setlocal <args>
+endif
+
+let s:cpo_save = &cpo
+set cpo-=C
+
+CompilerSet makeprg=sass
+
+CompilerSet errorformat=
+      \%f:%l:%m\ (Sass::Syntax%trror),
+      \%ESyntax\ %trror:%m,
+      \%C%\\s%\\+on\ line\ %l\ of\ %f,
+      \%Z%.%#,
+      \%-G%.%#
+
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
+" vim:set sw=2 sts=2:
+
+endif