show pj_dump errors, but avoid dumping the whole trace

tests/datawizard/locality.sh

@@ -41,5 +41,5 @@ $STARPU_LAUNCH $PREFIX/../../tools/starpu_fxt_tool -memory-states -label-deps -i
 if type pj_dump > /dev/null 2> /dev/null
 then
 	$PREFIX/../../tools/starpu_paje_sort paje.trace
-	pj_dump paje.trace
+	pj_dump -e 0 paje.trace
 fi

tests/overlap/overlap.sh

@@ -46,7 +46,7 @@ then
 	$STARPU_LAUNCH $PREFIX/../../tools/starpu_fxt_tool -memory-states -label-deps -i $PREFIX/prof_file_${USER}_0
 
 	$PREFIX/../../tools/starpu_paje_sort paje.trace
-	! type pj_dump || pj_dump -e 0 < paje.trace > /dev/null
+	! type pj_dump || pj_dump -e 0 < paje.trace
 
 	$PREFIX/../../tools/starpu_codelet_profile distrib.data overlap_sleep_1024_24
 	[ -f distrib.data.gp -a \( -f distrib.data.0 -o -f distrib.data.1 -o -f distrib.data.2 -o -f distrib.data.3 -o -f distrib.data.4 \) ]