patch 7.4.968

Problem:    test86 and test87 are flaky in Appveyor.
Solution:   Reduce the count from 8 to 7. (suggested by ZyX)

src/testdir/test86.in

@@ -370,7 +370,7 @@ EOF
 :sleep 1
 :py t.running = False
 :py t.join()
-:py l[0] = t.t > 8  # check if the background thread is working
+:py l[0] = t.t > 7  # check if the background thread is working
 :py del time
 :py del threading
 :py del t

src/testdir/test87.in

@@ -367,7 +367,7 @@ EOF
 :sleep 1
 :py3 t.running = False
 :py3 t.join()
-:py3 l[0] = t.t > 8  # check if the background thread is working
+:py3 l[0] = t.t > 7  # check if the background thread is working
 :py3 del time
 :py3 del threading
 :py3 del t

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    968,
 /**/
     967,
 /**/