Tweak 20032 test

The existing workaround for broken Merlin 32 behavior is sufficient
to handle the new test cases.  This updates 20032-labels-and-symbols
to fully exercise all DP addressing modes with non-DP labels.

(issue #170)

SourceGen/SGTestData/Source/20032-labels-and-symbols.S

@@ -240,14 +240,14 @@ before  nop
         lda     [<before+4&$ff],y
         lda     [<before+5&$ff]
         lda     <before+6&$ff,x
-        lda     (<zip+7&$ff,x)                  ;all versions of Merlin 32 fail
+        dfb     $a1,$a6             ;lda     (<before+7&$ff,x)
         lda     <before+8&$ff,y
 
         lda     <after&$ff
         lda     (<after+1&$ff),y
         ldx     <after+2&$ff,y
         ldy     <after+3&$ff,x
-        pei     (<zip+4&$ff)
+        dfb     $d4,$c4             ;pei     (<zip+4&$ff)
 
 after   nop