aapt now sorts the strings in the resource string pool.

aapt now sorts the strings in the resource string pool.

In our current environment with very many translations, this can
save a lot of RAM -- for example over 200K in Gmail just by sorting
the strings in the Gmail .apk (not the framework).

Also add a new aapt command to print the contents of the resource
table string pool.

Change-Id: I1da037b3e2c377b890833ff57ab158965314ac48