patch 8.2.2769: Modula-3 config files are not recognized

Problem:    Modula-3 config files are not recognized.
Solution:   Add filetype patterns. (Doug Kearns)

runtime/filetype.vim

@@ -417,6 +417,10 @@ endif
 " Lynx config files
 au BufNewFile,BufRead lynx.cfg			setf lynx
 
+" Modula-3 configuration language (must be before *.cfg and *makefile)
+au BufNewFile,BufRead *.quake,cm3.cfg		setf m3quake
+au BufNewFile,BufRead m3makefile,m3overrides	setf m3build
+
 " Quake
 au BufNewFile,BufRead *baseq[2-3]/*.cfg,*id1/*.cfg	setf quake
 au BufNewFile,BufRead *quake[1-3]/*.cfg			setf quake
@@ -1045,10 +1049,10 @@ au BufNewFile,BufRead *.mod
 	\   setf modsim3 |
 	\ endif
 
-" Modula 2  (.md removed in favor of Markdown)
+" Modula-2  (.md removed in favor of Markdown)
 au BufNewFile,BufRead *.m2,*.DEF,*.MOD,*.mi	setf modula2
 
-" Modula 3 (.m3, .i3, .mg, .ig)
+" Modula-3 (.m3, .i3, .mg, .ig)
 au BufNewFile,BufRead *.[mi][3g]		setf modula3
 
 " Monk

src/testdir/test_filetype.vim

@@ -290,6 +290,8 @@ let s:filename_checks = {
     \ 'lss': ['file.lss'],
     \ 'lua': ['file.lua', 'file.rockspec', 'file.nse'],
     \ 'lynx': ['lynx.cfg'],
+    \ 'm3build': ['m3makefile', 'm3overrides'],
+    \ 'm3quake': ['file.quake', 'cm3.cfg'],
     \ 'm4': ['file.at'],
     \ 'mail': ['snd.123', '.letter', '.letter.123', '.followup', '.article', '.article.123', 'pico.123', 'mutt-xx-xxx', 'muttng-xx-xxx', 'ae123.txt', 'file.eml', 'reportbug-file'],
     \ 'mailaliases': ['/etc/mail/aliases', '/etc/aliases', 'any/etc/aliases', 'any/etc/mail/aliases'],

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2769,
 /**/
     2768,
 /**/