ipmiutil: bump to version 2.9.7

Remove upstream or unneeded patches. Renumber and refresh the doc disable
patch. Add a different version of the lanplus disable fix (sent upstream) that
integrates with upstream change in this area.

Cc: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>