KVM as is assumes that the kernel obj dir and the kernel source dir are 
at the same location. This is true for most self-built vanilla kernels, 
but some distributions split these up (e.g. SUSE).
To keep compatible and have users have a good experience on building KVM 
on any distribution, this patch attempts to rebuild the logic from the 
kernel Makefile as closely as possible. With it I successfully built KVM 
on a current SUSE system.

Signed-off-by: Alexander Graf <agraf@suse.de>

Please check and see if it breaks the build process for anyone else. 
Building with IA64 on SUSE-kernels is still broken due to similar but 
separate problems.