vim-patch:8.2.1458: .gawk files not recognized

Problem:    .gawk files not recognized.
Solution:   Recognize .gawk files. (Doug Kearns)
9a5c553f79

runtime/filetype.vim

@@ -180,7 +180,7 @@ au BufNewFile,BufRead *.at			setf m4
 au BufNewFile,BufRead *.ave			setf ave
 
 " Awk
-au BufNewFile,BufRead *.awk			setf awk
+au BufNewFile,BufRead *.awk,*.gawk		setf awk
 
 " B
 au BufNewFile,BufRead *.mch,*.ref,*.imp		setf b

src/nvim/testdir/test_filetype.vim

@@ -73,7 +73,7 @@ let s:filename_checks = {
     \ 'autoit': ['file.au3'],
     \ 'automake': ['GNUmakefile.am'],
     \ 'ave': ['file.ave'],
-    \ 'awk': ['file.awk'],
+    \ 'awk': ['file.awk', 'file.gawk'],
     \ 'b': ['file.mch', 'file.ref', 'file.imp'],
     \ 'bc': ['file.bc'],
     \ 'bdf': ['file.bdf'],
@@ -596,7 +596,8 @@ let s:script_checks = {
       \ 'bc': [['#!/path/bc']],
       \ 'sed': [['#!/path/sed']],
       \ 'ocaml': [['#!/path/ocaml']],
-      \ 'awk': [['#!/path/awk']],
+      \ 'awk': [['#!/path/awk'],
+      \         ['#!/path/gawk']],
       \ 'wml': [['#!/path/wml']],
       \ 'scheme': [['#!/path/scheme']],
       \ 'cfengine': [['#!/path/cfengine']],