update html5shiv.js

git-svn-id: http://svn.code.sf.net/p/processhacker/code/misc@5284 21ef857c-d57f-4fe0-8362-d861dc6d29cd
update pack.css with the latest clean-css

git-svn-id: http://svn.code.sf.net/p/processhacker/code/misc@5285 21ef857c-d57f-4fe0-8362-d861dc6d29cd