"ieee80211" was the old name of the common library for ipw2100 and
ipw2200.  It was renamed to "libipw", but some occurrences of the old
name remained.

Rename alloc_ieee80211() to alloc_libipw() and free_ieee80211() to
free_libipw().  Adjust comments and label names.  Change prefixes in
diagnostic messages.

Keep /proc/net/ieee80211 under the original name to avoid breaking user
interface.

Move the affected EXPORT_SYMBOL macros to their proper places.
Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>