patch 9.1.0958: filetype: supertux2 config files detected as lisp

Problem:  filetype: supertux2 config files detected as lisp
Solution: detect supertux2 config files as scheme instead
          (Wu, Zhenyu)

References:
https://github.com/SuperTux/supertux/wiki/S-Expression

supertux uses #t and #f as bool type, which is same as scheme, not
common lisp

closes: #16287

Signed-off-by: Wu, Zhenyu <wuzhenyu@ustc.edu>
Signed-off-by: Christian Brabandt <cb@256bit.org>

src/testdir/test_filetype.vim

@@ -429,7 +429,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     limits: ['/etc/limits', '/etc/anylimits.conf', '/etc/anylimits.d/file.conf', '/etc/limits.conf', '/etc/limits.d/file.conf', '/etc/some-limits.conf', '/etc/some-limits.d/file.conf', 'any/etc/limits', 'any/etc/limits.conf', 'any/etc/limits.d/file.conf', 'any/etc/some-limits.conf', 'any/etc/some-limits.d/file.conf'],
     liquidsoap: ['file.liq'],
     liquid: ['file.liquid'],
-    lisp: ['file.lsp', 'file.lisp', 'file.asd', 'file.el', '.emacs', '.sawfishrc', 'sbclrc', '.sbclrc', 'file.stsg', 'any/local/share/supertux2/config'],
+    lisp: ['file.lsp', 'file.lisp', 'file.asd', 'file.el', '.emacs', '.sawfishrc', 'sbclrc', '.sbclrc'],
     lite: ['file.lite', 'file.lt'],
     litestep: ['/LiteStep/any/file.rc', 'any/LiteStep/any/file.rc'],
     logcheck: ['/etc/logcheck/file.d-some/file', '/etc/logcheck/file.d/file', 'any/etc/logcheck/file.d-some/file', 'any/etc/logcheck/file.d/file'],
@@ -671,7 +671,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     sather: ['file.sa'],
     sbt: ['file.sbt'],
     scala: ['file.scala'],
-    scheme: ['file.scm', 'file.ss', 'file.sld'],
+    scheme: ['file.scm', 'file.ss', 'file.sld', 'file.stsg', 'any/local/share/supertux2/config'],
     scilab: ['file.sci', 'file.sce'],
     screen: ['.screenrc', 'screenrc'],
     scss: ['file.scss'],

src/version.c

@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    958,
 /**/
     957,
 /**/