Run pj_dump on generated paje trace to check it

tests/overlap/overlap.sh

@@ -46,6 +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
 
 	$PREFIX/../../tools/starpu_codelet_profile distrib.data overlap_sleep_1024_24
 	[ -f distrib.data.gp -a \( -f distrib.data.0 -o -f distrib.data.1 -o -f distrib.data.2 -o -f distrib.data.3 -o -f distrib.data.4 \) ]