(nut-tree/nut.js#360) Added keypad keys to Linux keymap (#97)

* (nut-tree/nut.js#360) Added keypad keys to Linux keymap

* (nut-tree/nut.js#360) Reverted accidental changes to Windows keymap

Author: s1hofmann

src/keycode.h

@@ -153,16 +153,16 @@ enum _MMKeyCode {
 	K_PRINTSCREEN = XK_Print,
 	K_MENU = K_NOT_A_KEY,
 
-	K_NUMPAD_0 = K_NOT_A_KEY,
-	K_NUMPAD_1 = K_NOT_A_KEY,
-	K_NUMPAD_2 = K_NOT_A_KEY,
-	K_NUMPAD_3 = K_NOT_A_KEY,
-	K_NUMPAD_4 = K_NOT_A_KEY,
-	K_NUMPAD_5 = K_NOT_A_KEY,
-	K_NUMPAD_6 = K_NOT_A_KEY,
-	K_NUMPAD_7 = K_NOT_A_KEY,
-	K_NUMPAD_8 = K_NOT_A_KEY,
-	K_NUMPAD_9 = K_NOT_A_KEY,
+	K_NUMPAD_0 = XK_KP_0,
+	K_NUMPAD_1 = XK_KP_1,
+	K_NUMPAD_2 = XK_KP_2,
+	K_NUMPAD_3 = XK_KP_3,
+	K_NUMPAD_4 = XK_KP_4,
+	K_NUMPAD_5 = XK_KP_5,
+	K_NUMPAD_6 = XK_KP_6,
+	K_NUMPAD_7 = XK_KP_7,
+	K_NUMPAD_8 = XK_KP_8,
+	K_NUMPAD_9 = XK_KP_9,
 
 	K_AUDIO_VOLUME_MUTE = XF86XK_AudioMute,
 	K_AUDIO_VOLUME_DOWN = XF86XK_AudioLowerVolume,