Make API file importing sort stable

Currently we're relying on find to be consistent
across machines. This isn't very reliable so we
ensure a sort is done on the files first, so that
changes are consistent.

Also re-imported all of the old API files using the
new sort.

Change-Id: I0073196e05eaa9cdc193e32019e31e1ffb6d18b6
8 files changed