apply pointer warp effects immediately when instant warping

fix T1462
e - randr - stop saving config using XID - this is utterly WRONG

so e was storing randr config using XIDs to match outputs etc. this is
all kinds of wrong. XIDs are NOT STATIC. they change from xserver to
xserver and from run to run. they MAY be the same. they may not. so
this was just broken.

use output name + edid as a big "string" (name.edid) as a way ofr
identifying config for a specific combination of output plus monitor
and to find/identify the corrent output+monitor to apply it to (of
course missing edid gets replaced with ??? and missing output name is
??? too - i have never seen a missing output name so you get this at
least).

so this FIXES "restore" of screen mode on login for starters. this
does nothing to "fix" the screen setup dialog in any way. there are
separate issues there.

this also breaks e_randr config compat so i bumped epoch so your old
config is rejected. i don't see a sensible way of porting the config
forward.
cpufreq: teach cpuinfo_{min,max}_freq as available frequencies

Summary:
The intel_pstate scaling driver exposes the `scaling_cur_freq` since
kernel 3.17 [*], it would be fine that the min and max frequencies
are known even without the `scaling_available_frequencie`.

This commit teaches to use the cpuinfo_{min,max}_freq as fallback in
case the `scaling_available_frequencies` is not available within
intel pstate.

[*] https://lkml.org/lkml/2014/11/11/1060

Signed-off-by: Takeshi Banse <takebi@laafc.net>

Subscribers: cedric

Differential Revision: https://phab.enlightenment.org/D1686
e randr - fix warning (signed vs unsigned cmp)
fix efm dnd crash

fix T1880