New option for enabling alternative half-maximized window movement.

Added new option to Window Maker for enabling alternative way for
half-maximized windows movement. Option can be found on Expert section
in WPrefs app.

WPrefs.app/Expert.c

@@ -103,6 +103,9 @@ static const struct {
 	{ N_("Allow move half-maximized windows between multiple screens."),
 	  /* default: */ False, OPTION_WMAKER, "MoveHalfMaximizedWindowsBetweenScreens" },
 
+	{ N_("Alternative transitions between states for half maximized windows."),
+	  /* default: */ False, OPTION_WMAKER, "AlternativeHalfMaximized" },
+
 	{ N_("Open dialogs in the same workspace as their owners."),
 	  /* default: */ False, OPTION_WMAKER, "OpenTransientOnOwnerWorkspace" }
 

src/WindowMaker.h

@@ -366,6 +366,7 @@ extern struct WPreferences {
 	char snap_to_top_maximizes_fullscreen;
 	char drag_maximized_window;        /* behavior when a maximized window is dragged */
 	char move_half_max_between_heads;  /* move half maximized window between available heads */
+	char alt_half_maximize;            /* alternative half-maximize feature behavior */
 
 	char highlight_active_app;         /* show the focused app by highlighting its icon */
 	char auto_arrange_icons;           /* automagically arrange icons */

src/defaults.c

@@ -484,6 +484,8 @@ WDefaultEntry optionList[] = {
 	    &wPreferences.drag_maximized_window, getEnum, NULL, NULL, NULL},
 	{"MoveHalfMaximizedWindowsBetweenScreens", "NO", NULL,
 	    &wPreferences.move_half_max_between_heads, getBool, NULL, NULL, NULL},
+	{"AlternativeHalfMaximized", "NO", NULL,
+	    &wPreferences.alt_half_maximize, getBool, NULL, NULL, NULL},
 	{"HighlightActiveApp", "YES", NULL,
 	    &wPreferences.highlight_active_app, getBool, NULL, NULL, NULL},
 	{"AutoArrangeIcons", "NO", NULL,