Add syntax files from upstream vim repository

compiler/pyunit.vim

@@ -0,0 +1,20 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'vim') == -1
+  
+" Vim compiler file
+" Compiler:	Unit testing tool for Python
+" Maintainer:	Max Ischenko <mfi@ukr.net>
+" Last Change: 2004 Mar 27
+
+if exists("current_compiler")
+  finish
+endif
+let current_compiler = "pyunit"
+
+if exists(":CompilerSet") != 2		" older Vim always used :setlocal
+  command -nargs=* CompilerSet setlocal <args>
+endif
+
+CompilerSet efm=%C\ %.%#,%A\ \ File\ \"%f\"\\,\ line\ %l%.%#,%Z%[%^\ ]%\\@=%m
+
+
+endif