add abiity to force dialect

typically 'ORM', unless you know what you're doing/testing

modules/minigl/src/main/java/org/jpos/gl/GLSession.java

@@ -1964,7 +1964,10 @@ private void setDialect() {
         else if (ds.contains("postgres"))
             nativeDialect = NativeDialect.POSTGRESQL;
     }
-    private enum NativeDialect {
+    public void forceDialect (NativeDialect dialect) {
+        nativeDialect = dialect;
+    }
+    public enum NativeDialect {
         MYSQL, POSTGRESQL, ORM
     }
 }