Add Grab requests

- GrabPointer, UngrabPointer, GrabButton, UngrabButton, ChangeActivePointerGrab,
  GrabKeyboard, UngrabKeyboard, GrabKey and UngrabKey

lib/corereqs.js

@@ -466,6 +466,68 @@ module.exports = {
        }
    ],
 
+   GrabPointer: [
+       function(wid, ownerEvents, mask, pointerMode, keybMode, confineTo, cursor, time) {
+           return [ 'CCSLSCCLLL', [ 26, ownerEvents, 6, wid, mask, pointerMode, keybMode,
+                                    confineTo, cursor, time] ];
+       },
+       function(buf, status) {
+           return status;
+       }
+   ],
+
+   UngrabPointer: [
+       function(time) {
+           return [ 'CxSL', [ 27, 2, time] ];
+       }
+   ],
+
+   GrabButton: [
+       function(wid, ownerEvents, mask, pointerMode, keybMode, confineTo, cursor, button, modifiers) {
+           return [ 'CCSLSCCLLCxS', [ 28, ownerEvents, 6, wid, mask, pointerMode, keybMode, confineTo,
+                                      cursor, button, modifiers ] ];
+       }
+   ],
+
+   UngrabButton: [
+       function(wid, button, modifiers) {
+           return [ 'CCSLSxx', [ 29, button, 3, wid, modifiers ] ];
+       }
+   ],
+
+   ChangeActivePointerGrab: [
+       function(cursor, time, mask) {
+           return [ 'CxSLLSxx', [ 30, 4, cursor, time, mask ] ];
+       }
+   ],
+
+   GrabKeyboard: [
+       function(wid, ownerEvents, time, pointerMode, keybMode) {
+           return [ 'CCSLLCCxx', [ 31, ownerEvents, 4, wid, time, pointerMode, keybMode ] ];
+       },
+       function(buf, status) {
+           return status;
+       }
+   ],  
+
+   UngrabKeyboard: [
+       function(time) {
+           return [ 'CxSL', [ 32, 2, time ] ];
+       }
+   ],
+
+   GrabKey: [
+       function(wid, ownerEvents, modifiers, key, pointerMode, keybMode) {
+           return [ 'CCSLSCCCxxx', [ 33, ownerEvents, 4, wid, modifiers, key, pointerMode, keybMode ] ];
+       }	
+   ],
+
+   UngrabKey: [
+       function(wid, key, modifiers) {
+           return [ 'CCSLSxx', [ 34, key, 3, wid, modifiers ] ];
+       }
+   ],
+
    QueryPointer: [
        [ 'CxSL', [38, 2] ],
        function(buf, sameScreen) {