2 compile problems

[Haukur Hreinsson <hawk gagarin is>]

In libProplist, gnome-dom, gnome-guile, configure fails with something
like this:

checking whether ln -s works... (cached) yes
ltconfig: unrecognized option `--cache-file=.././config.cache'
Try `ltconfig --help' for more information.
configure: error: libtool configure failed
configure: error: ./configure failed for guile-gtk

I'm using libtool 1.2f from a Debian unstable package.

In libgtop and gdm, compilation fails because "net/if.h: No such file or
directory".

Everything if current from CVS.