Adapt OS400 SSL (qssl.h) to V5R4

Fix qssl.c wrong error message
Upgrade OS400 wrappers and makefiles to 7.18.1

packages/OS400/initscript.sh

@@ -156,7 +156,7 @@ db2_name()
 
 {
         basename "${1}"                                                 |
-        tr '[a-z]' '[A-Z]'                                              |
+        tr '[a-z-]' '[A-Z_]'                                              |
         sed -e 's/\..*//'                                               \
             -e 's/^\(..........\).*/\1/'
 }