a splattering of minor fixes

A variety of fixes:
 - use -Wall by default (doesn't trigger any warnings already)
 - support out of tree builds
 - install udev rules with read perms for all as there's nothing secret
   here, and no other udev rules install like this
 - also add an explicit COPYING file
 - also add an OWNERS file

TEST=`emerge-amd64-generic daisydog` still works (and has new perms)

Change-Id: I7009119dcf56488444517be534df90a03bd26770
Reviewed-on: https://chromium-review.googlesource.com/202260
Reviewed-by: Doug Anderson <dianders@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
3 files changed