patch 8.2.1566: not all Bazel files are recognized

Problem:    Not all Bazel files are recognized.
Solution:   Add *.bazel and *.BUILD. (closes #6836)
diff --git a/src/testdir/test_filetype.vim b/src/testdir/test_filetype.vim
index 6957954..5d37a86 100644
--- a/src/testdir/test_filetype.vim
+++ b/src/testdir/test_filetype.vim
@@ -75,6 +75,7 @@
     \ 'ave': ['file.ave'],
     \ 'awk': ['file.awk', 'file.gawk'],
     \ 'b': ['file.mch', 'file.ref', 'file.imp'],
+    \ 'bzl': ['file.bazel', 'file.bzl', 'WORKSPACE'],
     \ 'bc': ['file.bc'],
     \ 'bdf': ['file.bdf'],
     \ 'bib': ['file.bib'],
@@ -527,6 +528,7 @@
 
 let s:filename_case_checks = {
     \ 'modula2': ['file.DEF', 'file.MOD'],
+    \ 'bzl': ['file.BUILD', 'BUILD'],
     \ }
 
 func CheckItems(checks)
diff --git a/src/version.c b/src/version.c
index bbbb26e..b75c9fb 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1566,
+/**/
     1565,
 /**/
     1564,