[ENBD] Bring enbd back in Debian?

[Peter T. Breuer]

"Also sprach Peter T. Breuer:"
> It would be nice to pass the data to the top level Makefile without
> editing it. It calls
> 
>       ./configure --srcdir="$(VPATH)" --with-kernel-srcdir="$(LINUXDIR)"
> 
> and I suspect one could add a --build=$(BUILD_ARCH) parameter, which I

OK - it works now with make SYSTEM=debian. 

I just noticed that the configure line in the makefile is preceded by

    export CONFIG_SITE="$(VPATH)/nbd/conf/config.$(SYSTEM)";

which makes configure read nbd/conf/config.debian for its overrides. I
made one up (which references config.site first if it also exists in the
expected places in the system hierarchy).

Peter