convert test #558 into something more interesting, attempting

now to minimally exercise some internal hash routines.

tests/data/test558

@@ -15,7 +15,7 @@ lib558
 </tool>
 
 <name>
-loop testing
+internal hash testing
 </name>
 <command>
 nothing
@@ -26,28 +26,13 @@ nothing
 # Verify data after the test has been "shot"
 <verify>
 <stdout mode="text">
-malloc of root struct OK
-malloc of pointer table OK
-initializing table...
-table initialized OK
-filling pointer table...
-malloc of pointed element (idx 0) OK
-malloc of pointed element (idx 1) OK
-malloc of pointed element (idx 2) OK
-malloc of pointed element (idx 3) OK
-malloc of pointed element (idx 4) OK
-malloc of pointed element (idx 5) OK
-malloc of pointed element (idx 6) OK
-malloc of pointed element (idx 7) OK
-malloc of pointed element (idx 8) OK
-malloc of pointed element (idx 9) OK
-pointer table filling OK
-freeing pointers in table...
-freeing pointers in table OK
-freeing table...
-freeing table OK
-freeing root struct...
-freeing root struct OK
+easy handle init OK
+creating hash...
+hash creation OK
+destroying hash...
+hash destruction OK
+destroying easy handle...
+easy handle destruction OK
 </stdout>
 </verify>