fixed local scoping on call tag.

tests/testvar.jet

@@ -9,15 +9,14 @@ test1=[$[test1]]
 <set name="var1var" value="Yet another test" />
 <set name="var11" value="it seems to work." />
 name1=[#[name1]]
-$[$[ix]var$[ix];binary]
+$[$[ix]var$[ix];tobinary]
 $[var$[ix]]
 $[var$[ix]var]
 $[var$[i$[letterx]]var]
-$[letterx;TOHEX]
+$[letterx;tohex]
 $[var$[i$[letterx]]$[ix]]
 $[var$[i$[letterx]]$[i$[letterx]]]
 $[ix]
 <set name="ix" expr="$[ix]+1" />
 $[ix]
-#[iy]
 </jet>