Use square corners for bottom

(Old svn revision: 11479)

themes/default/bottom-left-active.xpm

@@ -19,7 +19,7 @@ static char * bottom_left_active_xpm[] = {
 "@.$++           ",
 "@.$++           ",
 "@.$+++++++++++++",
-" @.$++++++++++++",
-" @..$$$$$$$$$$$$",
-"  @@............",
-"    @@@@@@@@@@@@"};
+"@.$+++++++++++++",
+"@.$$$$$$$$$$$$$$",
+"@...............",
+"@@@@@@@@@@@@@@@@"};

themes/default/bottom-left-inactive.xpm

@@ -19,7 +19,7 @@ static char * bottom_left_inactive_xpm[] = {
 "@.$++           ",
 "@.$++           ",
 "@.$+++++++++++++",
-" @.$++++++++++++",
-" @..$$$$$$$$$$$$",
-"  @@............",
-"    @@@@@@@@@@@@"};
+"@.$+++++++++++++",
+"@.$$$$$$$$$$$$$$",
+"@...............",
+"@@@@@@@@@@@@@@@@"};

themes/default/bottom-right-active.xpm

@@ -19,7 +19,7 @@ static char * bottom_right_active_xpm[] = {
 "           ++$.@",
 "           ++$.@",
 "+++++++++++++$.@",
-"++++++++++++$.@ ",
-"$$$$$$$$$$$$..@ ",
-"............@@  ",
-"@@@@@@@@@@@@    "};
+"+++++++++++++$.@",
+"$$$$$$$$$$$$$$.@",
+"...............@",
+"@@@@@@@@@@@@@@@@"};

themes/default/bottom-right-inactive.xpm

@@ -19,7 +19,7 @@ static char * bottom_right_inactive_xpm[] = {
 "           ++$.@",
 "           ++$.@",
 "+++++++++++++$.@",
-"++++++++++++$.@ ",
-"$$$$$$$$$$$$..@ ",
-"............@@  ",
-"@@@@@@@@@@@@    "};
+"+++++++++++++$.@",
+"$$$$$$$$$$$$$$.@",
+"...............@",
+"@@@@@@@@@@@@@@@@"};