Allow installation of extracted packages with pkg.m

[Thomas Weber]

On 23/03/08 11:49 -0400, John W. Eaton wrote:
> I don't know pkg.m very well, so it would help me if someone who does
> could comment on this patch.  If the above is generally OK and the
> loop is not needed, then please resubmit the patch with the loop
> removed.  Also please explain the apparently stray "endif".

Patch attached. Three changesets:
1) Remove the superfluous for-loop
2) Reindent accordingly, no code changes
3) Allow installation of extracted packages

	Thomas
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