The "Generating index for package" created by ipkg-make-index only
clutter stderr and serve to push previous warnings/errors off-screen.
Instead, send to stdout.

Note:  This would send incorrect invocation messages to stdout as well.
If this is a concern, perhaps we could send them to FD 3, then send 3 to
2...

Signed-off-by: Kevin Locke <klocke@digitalenginesoftware.com>

SVN-Revision: 25678