Update runtime files.

runtime/compiler/gawk.vim

@@ -0,0 +1,34 @@
+" Vim compiler file
+" Compiler:	GNU Awk
+" Maintainer:	Doug Kearns <dougkearns@gmail.com>
+" Last Change:	2020 Feb 10
+
+if exists("current_compiler")
+  finish
+endif
+let current_compiler = "gawk"
+
+if exists(":CompilerSet") != 2		" older Vim always used :setlocal
+  command -nargs=* CompilerSet setlocal <args>
+endif
+
+let s:cpo_save = &cpo
+set cpo&vim
+
+CompilerSet makeprg=gawk
+CompilerSet errorformat=%Z%.awk:\ %f:%l:\ %p^\ %m,
+		       \%Eg%\\=awk:\ %f:%l:\ fatal:\ %m,
+		       \%Egawk:\ %f:%l:\ error:\ %m,
+		       \%Wgawk:\ %f:%l:\ warning:\ %m,
+		       \%Egawk:\ %f:%l:\ %.%#,
+		       \gawk:\ %f:%l:\ %tatal:\ %m,
+		       \gawk:\ %f:%l:\ %trror:\ %m,
+		       \gawk:\ %f:%l:\ %tarning:\ %m,
+		       \gawk:\ %tatal:\ %m,
+		       \gawk:\ %trror:\ %m,
+		       \gawk:\ %tarning:\ %m,
+		       \%+C%.%#,
+		       \%-G%.%#
+
+let &cpo = s:cpo_save
+unlet s:cpo_save