Merged revisions 2778:2832 from 1.6 branch. Add some Linux keycodes, make skin name arrays safer, disable dx8. Please note, the last merge was from wrong repository, now everything is up to date again.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@2835 dfc29bdd-3216-0410-991c-e03cc46cb475