Allow compiling aapt for the device

Changes:

- The static device version of libandroidfw now includes
  the extra functions needed by aapt. I could only find
  a few host tools that use the static library, so this is
  hopefully not a problem.

- The pseudolocalization code is moved into aapt.
  It was previously in libhost, but only used by aapt.

Change-Id: Ib393ebb7dcebee8abbb628cbe5255ea1679674ac