use install from coreutils, use expr from coreutils
be more inclusive with .gitignore
update mawk to 1.3.4_20141206
remove hwclock and su from util-linux-toybox
update toybox to 0.5.1, add tests (some fail, don't worry about it)

enable utmpx, pty, shadow, hwclock, help_extras, tr
disable install, crontab, host, ipcrm, nsenter
change uid_usr to be 1000
minor getopt pkgbuild changes
slightly less inclusive .gitignore
don't provide findutils, there's too many reasons not to try and replace it yet