Allow building with xf86-input-libinput when specified

[lrusak]

I'd like to still use libinput for testing on my builds (others may too) so adding LIBINPUT="yes" to you local options file will build xf86-input-libinput instead of xf86-input-evdev.

Also bumping libinput to version 1.0.1

[stefansaraev]

this is wrong. now xf86-input-libinput is always installed.

[stefansaraev]

and we probably have the good old remote bug again.

fyi 'if [ -n $boo ]' is NOT same as 'if [ -n "$boo" ]'

[stefansaraev]

also, when you (again) switch to libinput, please, doubleecheck that keyboard layouts (and switching work. thanks.

[MilhouseVH]

Switching between libinput and evdev requires a clean build - you're right that with this PR we're now building libinput by default, sigh (hadn't noticed any remote issues as I'm yet to do a clean build since this merged).

[stefansaraev]

my suggestion is to completely remove packages/wayland but well. nothing more to say.

you wont see any remote issues on non-x86(xorg)

[MilhouseVH]

you wont see any remote issues on non-x86(xorg)

I know, I build x86 too - currently watching on a Revo 3700 with my own #917 build that includes this PR and no remote issues. Suspect if I build clean then I will have issues.