amiagent 0.3.1 — packaging fix

Packaging fix. The binary is unchanged from 0.3.0 apart from its version string.

0.3.0 installed the wrong files via amipkg. amipkg extracts every package
into one shared directory, so the recipe's * glob matched leftovers from
earlier installs and copied another package's binaries into
Programs/amiagent. Caught by actually installing it on hardware.

The archive now carries a top-level amiagent/ drawer and the recipe globs
amiagent/*, which is what every other recipe in the catalog does — the drawer
is what scopes the glob.

If you installed 0.3.0 through amipkg, amipkg remove amiagent then
amipkg install amiagent puts it right. A manual unpack of the 0.3.0 archive
was never affected.