CKReleaser is breaking hotkeys in CKEditor

[Martin Kou]

To reproduce:

1. Add Tab_Issue.2.html to the _samples directory of SVN trunk.
2. Compress the trunk with CKReleaser.
3. Open Tab_Issue.2.html within the release package.
4. Press Tab and Shift-Tab from inside the editing area, you'll see different buggy behaviors described in #3132.
5. Press Ctrl-B in the editing area. You'll see other buggy behaviors depending on the browser.

[Wiktor Walc]

The problem was in invalid redeclaration of the cancel variable.

As a result CKPackager renamed the cancel variable to another letter and used that letter in

if ( cancel )
	event.preventDefault( true );

which caused invalid results.

There is no need to redeclare this variable.

[Frederico Caldeira Knabben]

Oppss... it looks like we need a jslint run here.

[Wiktor Walc]

Fixed with [3291].