patch 9.0.0648: when using powershell input redirection does not work

Problem:    When using powershell input redirection does not work.
Solution:   Use a different shell command for powershell. (Yegappan
            Lakshmanan, closes #11257)

src/version.c

@@ -699,6 +699,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    648,
 /**/
     647,
 /**/