Add option GWIN_BUTTON_LAZY_RELEASE

Add option GWIN_BUTTON_LAZY_RELEASE. When set to true in gfxconf.h it
changes gwin button behaviour to not require the mouse/touch be over the
button when it is released.

gfxconf.example.h

@@ -87,6 +87,7 @@
 	#define GEVENT_MAX_SOURCE_LISTENERS		32
 	#define GTIMER_THREAD_WORKAREA_SIZE		512
 	#define GADC_MAX_LOWSPEED_DEVICES		4
+	#define GWIN_BUTTON_LAZY_RELEASE		FALSE
 */
 
 /* Optional Low Level Driver Definitions */

include/gwin/options.h

@@ -62,9 +62,12 @@
 /**
  * @}
  *
- * @name    GWIN Optional Sizing Parameters
+ * @name    GWIN Optional Parameters
  * @{
  */
+	#ifndef GWIN_BUTTON_LAZY_RELEASE
+		#define GWIN_BUTTON_LAZY_RELEASE		FALSE
+	#endif
 /** @} */
 
 #endif /* _GWIN_OPTIONS_H */

src/gwin/button.c

@@ -87,6 +87,9 @@ static void gwinButtonCallback(void *param, GEvent *pe) {
 			gbw->state = GBTN_UP;
 			gwinButtonDraw((GHandle)param);
 
+			#if GWIN_BUTTON_LAZY_RELEASE
+				break;
+			#else
 				// If the mouse up was over the button then create the event
 				if (pme->x >= gbw->gwin.x && pme->x < gbw->gwin.x + gbw->gwin.width
 						&& pme->y >= gbw->gwin.y && pme->y < gbw->gwin.y + gbw->gwin.height)
@@ -94,6 +97,7 @@ static void gwinButtonCallback(void *param, GEvent *pe) {
 
 				return;
 			#endif
+	#endif
 
 	#if defined(GINPUT_NEED_TOGGLE) && GINPUT_NEED_TOGGLE
 		case GEVENT_TOGGLE: