patch 8.1.0735: cannot handle binary data

Problem:    Cannot handle binary data.
Solution:   Add the Blob type. (Yasuhiro Matsumoto, closes #3638)
diff --git a/src/testdir/Make_all.mak b/src/testdir/Make_all.mak
index 8d83516..6ea0c45 100644
--- a/src/testdir/Make_all.mak
+++ b/src/testdir/Make_all.mak
@@ -73,6 +73,7 @@
 	test_backspace_opt \
 	test_backup \
 	test_behave \
+	test_blob \
 	test_blockedit \
 	test_breakindent \
 	test_bufline \
@@ -283,6 +284,7 @@
 	test_autocmd.res \
 	test_autoload.res \
 	test_backspace_opt.res \
+	test_blob.res \
 	test_blockedit.res \
 	test_breakindent.res \
 	test_bufwintabinfo.res \