patch 8.2.4849: Gleam filetype not detected

Problem:    Gleam filetype not detected.
Solution:   Add a pattern for Gleam files. (Mathias Jean Johansen,
            closes #10326)

src/testdir/test_filetype.vim

@@ -211,6 +211,7 @@ let s:filename_checks = {
     \ 'gitrebase': ['git-rebase-todo'],
     \ 'gitsendemail': ['.gitsendemail.msg.xxxxxx'],
     \ 'gkrellmrc': ['gkrellmrc', 'gkrellmrc_x'],
+    \ 'gleam': ['file.gleam'],
     \ 'glsl': ['file.glsl'],
     \ 'gnash': ['gnashrc', '.gnashrc', 'gnashpluginrc', '.gnashpluginrc'],
     \ 'gnuplot': ['file.gpi', '.gnuplot'],

src/version.c

@@ -746,6 +746,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    4849,
 /**/
     4848,
 /**/