core: dprintf on malloc/free if -DDEBUG_MALLOC

When dynamic debug is engaged, the output is pretty flooded by
malloc/free messages while you are looking at other traces.

As devel.mk have a DEBUG_MALLOC option, it seems pretty logical to
enable the malloc/free dprintf() only if this option is engaged.

That patch make the dynamic debug output less floody while letting the
choice to get the malloc/free dprintf() messages.
2 files changed