print --help-defines and --help-metas on default command line (closes #2841)
print --help-defines and --help-metas on default command line (closes #2841)

pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe