patch 8.2.2630: hard to see where a test gets stuck

Problem:    Hard to see where a test gets stuck.
Solution:   Print the executed test function. (Dominique Pellé, closes #7975)

src/testdir/Makefile

@@ -12,7 +12,7 @@ SCRIPTSOURCE = ../../runtime
 # Comment out this line to see the verbose output of tests.
 #
 # Catches SwapExists to avoid hanging at the ATTENTION prompt.
-REDIR_TEST_TO_NULL = --cmd 'au SwapExists * let v:swapchoice = "e"' > /dev/null
+REDIR_TEST_TO_NULL = --cmd 'au SwapExists * let v:swapchoice = "e"' | LC_ALL=C LANG=C LANGUAGE=C awk '/Executing Test_/{match($$0, "Executing Test_[^\\)]*\\)"); print substr($$0, RSTART, RLENGTH) "\r"; fflush()}'
 
 # Uncomment this line to use valgrind for memory leaks and extra warnings.
 #   The output goes into a file "valgrind.testN"

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2630,
 /**/
     2629,
 /**/