Add syntax files from upstream vim repository

compiler/erlang.vim

@@ -0,0 +1,17 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'vim') == -1
+  
+" Vim compiler file
+" Compiler:     Erlang
+" Maintainer:	Dmitry Vasiliev <dima at hlabs dot org>
+" Last Change:	2012-02-13
+
+if exists("current_compiler")
+  finish
+endif
+let current_compiler = "erlang"
+
+CompilerSet makeprg=erlc\ -Wall\ %
+
+CompilerSet errorformat=%f:%l:\ %m
+
+endif