fix for 316545 is incorrect

The fix for 316545 corrected Object[] meeting byte[][] but broke byte[] meeting byte[][].  I've attached a 
test case based on the testcase from 316545.  The problem is that if the dimensionailty is 1 then you 
have to go to Object instead of Object[].  A possible fix looks like this:

Index: Frame.java
=================================================================
==
--- Frame.java	(revision 1736)
+++ Frame.java	(working copy)
@@ -1435,8 +1435,12 @@
                 // and t have different array dimensions
                 int tdim = t & DIM;
                 int udim = u & DIM;
-                v = (udim != tdim ? Math.min(tdim, udim) : 0) | OBJECT
+                if (((u & BASE_KIND) == OBJECT || udim > 0x10000000) && ((t & BASE_KIND) == OBJECT || 
tdim > 0x10000000)) {
+                    v = (udim != tdim ? Math.min(tdim, udim) : 0) | OBJECT
                         | cw.addType("java/lang/Object");
+                } else {
+                    v = OBJECT | cw.addType("java/lang/Object");
+                }
             } else {
                 // if t is any other type, merge(u,t)=TOP
                 v = TOP;