split off window hints from geometry so we don't need to carry them all

around when dealing with {,h,v}max.  same idea from oga.

calmwm.h

@@ -121,6 +121,8 @@ struct client_ctx {
 		int		 y;	/* y position */
 		int		 width;	/* width */
 		int		 height;/* height */
+	} geom, savegeom;
+	struct {
 		int		 basew;	/* desired width */
 		int		 baseh;	/* desired height */
 		int		 minw;	/* minimum width */
@@ -131,7 +133,7 @@ struct client_ctx {
 		int		 inch;	/* height increment progression */
 		float		 mina;	/* minimum aspect ratio */
 		float		 maxa;	/* maximum aspect ratio */
-	} geom, savegeom;
+	} hint;
 	struct {
 		int		 x;	/* x position */
 		int		 y;	/* y position */