Bug#514409: xkb-data does not support cz_qwerty anymore

[Radek Burget <radkovo@centrum.cz>]

It seems that the separate layout has been replaced by a variant, which is 
more logical. The right configuration is:

Section "InputDevice"
        Identifier      "Generic Keyboard"
        Driver          "kbd"
        Option          "CoreKeyboard"
        Option          "XkbRules"      "xorg"
        Option          "XkbModel"      "pc104"
        Option          "XkbLayout"     "us,cz"
        Option          "XkbVariant"     ",qwerty"
        Option          "XkbOptions"    "grp:shift_toggle,grp_led:scroll"
EndSection

(note the comma in the variant specification)