patch 8.1.1476: no statistics displayed after running tests

Problem:    No statistics displayed after running tests.
Solution:   Summarize the test results. (Christian Brabandt, closes #4391)
            Also make it possible to report a skipped file.
diff --git a/src/Makefile b/src/Makefile
index 1347499..65398d0 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -2117,7 +2117,8 @@
 # TESTING
 #
 # Execute the test scripts and the unittests.
-test check: scripttests unittests test_libvterm
+# Do the scripttests first, so that the summary shows last.
+test check: unittests test_libvterm scripttests
 
 # Execute the test scripts.  Run these after compiling Vim, before installing.
 # This doesn't depend on $(VIMTARGET), because that won't work when configure