patch 9.0.0393: signals test often fails on FreeBSD

Problem:    Signals test often fails on FreeBSD.
Solution:   Use separate files for Suspend and Resume. (Ken Takata,
            closes #11065)
diff --git a/src/version.c b/src/version.c
index 87603fc..219b414 100644
--- a/src/version.c
+++ b/src/version.c
@@ -704,6 +704,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    393,
+/**/
     392,
 /**/
     391,