This is needed by OS/2 and Windows NT and some programs like VirtualPC.
This patch has been tested using OS/2 bootloader (thanks to Tero
Kaarlela).
(Jocelyn Mayer)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1379 c046a42c-6fe2-441c-8c8c-71466251a162