patch 7.4.2204
Problem:    It is not easy to get information about buffers, windows and
            tabpages.
Solution:   Add getbufinfo(), getwininfo() and gettabinfo(). (Yegappan
            Lakshmanan)
diff --git a/src/Makefile b/src/Makefile
index e15df1b..dbfa90b 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -2056,6 +2056,7 @@
 	test_autochdir \
 	test_autocmd \
 	test_backspace_opt \
+	test_bufwintabinfo \
 	test_cdo \
 	test_channel \
 	test_cmdline \