patch 8.0.1616: Win32: shell commands in the GUI open a new console

Problem:    Win32: shell commands in the GUI open a new console.
Solution:   Use a terminal window for interactive use when 'guioptions'
            contains "!".
diff --git a/src/version.c b/src/version.c
index 6beb36e..58c4e89 100644
--- a/src/version.c
+++ b/src/version.c
@@ -767,6 +767,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1616,
+/**/
     1615,
 /**/
     1614,