Add syntax files from upstream vim repository

compiler/rst.vim

@@ -0,0 +1,36 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'vim') == -1
+  
+" Vim compiler file
+" Compiler:             sphinx >= 1.0.8, http://www.sphinx-doc.org
+" Description:          reStructuredText Documentation Format
+" Previous Maintainer:  Nikolai Weibull <now@bitwi.se>
+" Latest Revision:      2017-03-31
+
+if exists("current_compiler")
+  finish
+endif
+let current_compiler = "rst"
+
+let s:cpo_save = &cpo
+set cpo&vim
+
+if exists(":CompilerSet") != 2
+  command -nargs=* CompilerSet setlocal <args>
+endif
+
+CompilerSet errorformat=
+      \%f\\:%l:\ %tEBUG:\ %m,
+      \%f\\:%l:\ %tNFO:\ %m,
+      \%f\\:%l:\ %tARNING:\ %m,
+      \%f\\:%l:\ %tRROR:\ %m,
+      \%f\\:%l:\ %tEVERE:\ %m,
+      \%f\\:%s:\ %tARNING:\ %m,
+      \%f\\:%s:\ %tRROR:\ %m,
+      \%D%*\\a[%*\\d]:\ Entering\ directory\ `%f',
+      \%X%*\\a[%*\\d]:\ Leaving\ directory\ `%f',
+      \%DMaking\ %*\\a\ in\ %f
+
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
+endif