patch 8.0.0861: still many old style tests

Problem:    Still many old style tests.
Solution:   Convert several tests to new style. (Yegappan Lakshmanan)
diff --git a/src/Makefile b/src/Makefile
index e4ccf37..ca8b1a3 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -2137,6 +2137,7 @@
 	test_crypt \
 	test_cscope \
 	test_cursor_func \
+	test_curswant \
 	test_delete \
 	test_diffmode \
 	test_digraph \
@@ -2155,6 +2156,7 @@
 	test_farsi \
 	test_feedkeys \
 	test_file_perm \
+	test_file_size \
 	test_fileformat \
 	test_filetype \
 	test_filter_cmd \
@@ -2189,6 +2191,8 @@
 	test_lambda \
 	test_langmap \
 	test_largefile \
+	test_let \
+	test_lineending \
 	test_lispwords \
 	test_listlbr \
 	test_listlbr_utf8 \
@@ -2233,6 +2237,7 @@
 	test_reltime \
 	test_retab \
 	test_ruby \
+	test_scrollbind \
 	test_search \
 	test_searchpos \
 	test_set \