Fix input with numlock-keys on Linux. Thx @zerochen for report and help with bugfixing.


git-svn-id: svn://svn.code.sf.net/p/irrlicht/code@4669 dfc29bdd-3216-0410-991c-e03cc46cb475
Make key-release events also show the correct Char value on Windows (thx @zerochen for report+fix here: http://irrlicht.sourceforge.net/forum/viewtopic.php?f=7&t=49499)

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code@4670 dfc29bdd-3216-0410-991c-e03cc46cb475