patch 9.0.1176: smithy files are not recognized

Problem:    smithy files are not recognized.
Solution:   Add a pattern for Smithy files. (Chris Kipp, closes #11804)

runtime/filetype.vim

@@ -110,9 +110,11 @@ au BufNewFile,BufRead *.a65			setf a65
 " Applescript
 au BufNewFile,BufRead *.scpt			setf applescript
 
+" Automake (must be before the *.am pattern)
+au BufNewFile,BufRead [mM]akefile.am,GNUmakefile.am	setf automake
+
 " Applix ELF
-au BufNewFile,BufRead *.am
-	\ if expand("<afile>") !~? 'Makefile.am\>' | setf elf | endif
+au BufNewFile,BufRead *.am			setf elf
 
 " ALSA configuration
 au BufNewFile,BufRead .asoundrc,*/usr/share/alsa/alsa.conf,*/etc/asound.conf setf alsaconf
@@ -187,9 +189,6 @@ au BufNewFile,BufRead *.au3			setf autoit
 " Autohotkey
 au BufNewFile,BufRead *.ahk			setf autohotkey
 
-" Automake
-au BufNewFile,BufRead [mM]akefile.am,GNUmakefile.am	setf automake
-
 " Autotest .at files are actually m4
 au BufNewFile,BufRead *.at			setf m4
 
@@ -1928,6 +1927,9 @@ au BufNewFile,BufRead *.smi
 " SMITH
 au BufNewFile,BufRead *.smt,*.smith		setf smith
 
+" Smithy
+au BufNewFile,BufRead *.smithy			setf smithy
+
 " Snobol4 and spitbol
 au BufNewFile,BufRead *.sno,*.spt		setf snobol4
 

src/testdir/test_filetype.vim

@@ -528,6 +528,7 @@ let s:filename_checks = {
     \ 'smarty': ['file.tpl'],
     \ 'smcl': ['file.hlp', 'file.ihlp', 'file.smcl'],
     \ 'smith': ['file.smt', 'file.smith'],
+    \ 'smithy': ['file.smithy'],
     \ 'sml': ['file.sml'],
     \ 'snobol4': ['file.sno', 'file.spt'],
     \ 'solidity': ['file.sol'],

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1176,
 /**/
     1175,
 /**/