Edwin Carlinet authored May 21, 2010 and Guillaume Lazzara committed May 21, 2010

	* mln/border/thickness.hh,
	* mln/core/alias/dpoint1d.hh,
	* mln/core/alias/dpoint2d.hh,
	* mln/core/alias/dpoint3d.hh,
	* mln/fun/v2v/hsl_to_rgb.hh,
	* mln/literal/black.hh,
	* mln/literal/colors.hh,
	* mln/literal/identity.hh,
	* mln/literal/one.hh,
	* mln/literal/origin.hh,
	* mln/literal/white.hh,
	* mln/literal/zero.hh,
	* mln/tag/init.hh,
	* mln/trace/entering.hh,
	* mln/trace/quiet.hh,
	* mln/value/sign.hh : Add MLN_WO_GLOBAL_VARS define.