[syslinux] syslinux-6.04-pre3 botched

[H. Peter Anvin]

I think I botched syslinux-6.04-pre3.  There are two fundamental
problems with the build:

a) The selection of what pieces of the library gets included in the core
   is done manually whereas it really should be automatic;

b) The build doesn't fail if there are unresolved dependencies between
   the libraries and the core.

I will fix these. (b) is IMO fundamental to avoid this error in the
future, so I want to fix it correctly.

	-hpa