Add syntax files from upstream vim repository

compiler/gfortran.vim

@@ -0,0 +1,31 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'vim') == -1
+  
+" Compiler: GNU Fortran Compiler
+" Maintainer: H Xu <xuhdev@gmail.com>
+" Version: 0.1.3
+" Last Change: 2012 Apr 30
+" Homepage: http://www.vim.org/scripts/script.php?script_id=3496
+"           https://bitbucket.org/xuhdev/compiler-gfortran.vim
+" License: Same as Vim
+
+if exists('current_compiler')
+    finish
+endif
+let current_compiler = 'gfortran'
+let s:keepcpo= &cpo
+set cpo&vim
+
+if exists(":CompilerSet") != 2		" older Vim always used :setlocal
+  command -nargs=* CompilerSet setlocal <args>
+endif
+
+CompilerSet errorformat=
+            \%A%f:%l.%c:,
+            \%-Z%trror:\ %m,
+            \%-Z%tarning:\ %m,
+            \%-C%.%#
+
+let &cpo = s:keepcpo
+unlet s:keepcpo
+
+endif