patch 8.2.0589: .bsd file type not recognized

Problem:    .bsd file type not recognized.
Solution:   Recognize .bsd as BSDL. (Daniel Kho, closes #5945)

src/testdir/test_filetype.vim

@@ -79,7 +79,7 @@ let s:filename_checks = {
     \ 'bib': ['file.bib'],
     \ 'bindzone': ['named.root'],
     \ 'blank': ['file.bl'],
-    \ 'bsdl': ['file.bsdl'],
+    \ 'bsdl': ['file.bsd', 'file.bsdl'],
     \ 'bst': ['file.bst'],
     \ 'bzr': ['bzr_log.any'],
     \ 'c': ['enlightenment/file.cfg', 'file.qc', 'file.c'],

src/version.c

@@ -746,6 +746,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    589,
 /**/
     588,
 /**/