houdini: change sha256, add missing libs, fix license dir patch, fix keyboard input

- Changed sha256 of src file, as this was apparantly changed on the
website

- Added missing libs: some X libs, alsa, dbus

- Changed patch to $out/houdini/Licensing.opt
localValidatorDir = ... was commented out in original file
so sed had no effect

- add export QT_XKB_CONFIG_ROOT
Without it only modifier keys worked, no text input