patch 9.0.0584: cscope test with wrong executable name fails

Problem:    Cscope test with wrong executable name fails.
Solution:   Use /bin/sh to execute the command. (Yegappan Lakshmanan)
diff --git a/src/version.c b/src/version.c
index fdd6a23..9740201 100644
--- a/src/version.c
+++ b/src/version.c
@@ -700,6 +700,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    584,
+/**/
     583,
 /**/
     582,