Added ralt_switch to Greek default variant, b.fd.o#18819

[xorg/xkeyboard-config] / symbols / shift

// $XKeyboardConfig$

partial modifier_keys 
xkb_symbols "breaks_caps" {
    key <LFSH> {
        type = "ALPHABETIC",
        actions [Group1] = [
            SetMods(modifiers=Shift),
            SetMods(modifiers=Shift+Lock,clearLocks)
        ]
    };
    key <RTSH> {
        type = "ALPHABETIC",
        actions [Group1] = [
            SetMods(modifiers=Shift),
            SetMods(modifiers=Shift+Lock,clearLocks)
        ]
    };
};