Update html5shiv.js to v3.7.0

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5567 2fea6a4d-a838-0410-917b-93a53c48e9d2
Snapshot of languages files as of Textpattern 4.5.5

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5577 2fea6a4d-a838-0410-917b-93a53c48e9d2
Merge remote-tracking branch 'upstream/master'