Add taco command - build for selected device(s) using pseudo

... and I can finally just type "taco mako"

PS2: Serve with multiple sauces (eg. taco mako grouper)

Change-Id: I5c0ee3300cf5d646ccfdcdf1c45474df74fceee3
Signed-off-by: Gergely Szell (sethyx) <szell@hu.ibm.com>
envsetup: Add pstest

  An easy way to cherry pick patch submissions from AOKP's
  gerrit instance. Nice for at a glance tests, or when
  using a mobile device to ssh into a buildbox.
  (copying patches via the Android browswer is painful.)

  Patch Set 2: fix bad formatting.

Change-Id: I053a69137c7e0c33631ede138e65cbc16cbd36ba
Signed-off-by: KhasMek <Boushh@gmail.com>