Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Add 'generic' flash images. This is for projects producing generic
images that are of a certain size. The geometery is bogus, but that
doesn't matter since the new packet mode onviates the need to get the
geometry right.

When copy+paste goes wrong... Remove duplicate "expr".

Submitted by: danfe@

iiin -> in

Submitted by: "N.J. Mann" <njm@njm.me.uk>

Support for 64 Mb Kodak flash device.

PR: misc/115025
Submitted by: Michael W Lucas <mwlucas@freebsd.org>
MFC after: 1 week

Add support for 256MB Hitachi CF card and 256MB Silicon Systems CF card

This patch against RELENG_6 adds two more entries to
src/tools/tools/nanobsd/FlashDevice.sub - one for a 256MB
Hitachi CF card and one for a 256MB Silicon Systems CF card.

Both entries have been verified to work with a Soekris net4801.

PR: kern/101228
Submitted by: Henrik Brix Andersen <henrik@brixandersen.dk>
MFC after: 1 week

Use expr -e instead of expr to compute NANO_MEDIASIZE for Flash devices
larger than 2GB to prevent an overflow [1].
Make case-insensitive comparison work for siliconsystems, soekris and
transcend devices.

PR: conf/126386 [1]
Submitted by: Mark A [1]
MFC after: 1 month

Add the Transcend 2GB card specs.

Add Memory Corp 512MB CF Flash.

MFC after: 3 days

Fix an obvious bug.

Submitted by: Alex Lyashkov <umka@sevcity.net>

Use tr(1) to lowercase strings in a way which works with all locales.

Approved by: cperciva (mentor)

Add missing ' and '

Submitted by: simon

Make this more readable and add more devices.

Partially from: mich@FreeBSD.org

Add geometry of SiliconSystems 4GB CF card

Add a convenience function to set NANO_MEDIASIZE, NANO_HEADS and NANO_SECTS
for commonly used flash devices by

FlashDevice Sandisk 256MB

in the config file.