ROMs will refuse to build unless pci_vendor_id and pci_device_id are
defined.  We probably ought to fix up the Makefile (and the ROM prefix) so
that they're required only for PCI ROMs, but this will do for now.

Using -MM strips out any system header files from the dependency list,
which means that we could safely use an external stdarg.h if we wanted
to.

Deleting bin/deps after "make veryclean" keeps deps from being
regenerated in the tarball.

Added 'install' and 'configure' targets for those who are used
to other build setups.

src/bin/%.tmp files can be useful for debugging, so let's keep them.

for "echo -e" on the host system.

suitable "echo -e" substitute.

implement the -e option.

(Thanks to Jim McQuillan for this suggestion.)

Inhibit -Werror when generating Makefile rules, to prevent warnings
from killing the dependency list.

into account (and so remove the false positives due to .tbl.* symbols).

bin/%.bin target.

This reverts commit fc5f6c9de2.

Reverted commit breaks the much more common case of changing the debug
options in subsequent builds without any code changes.

other.

Create something that might be usable as a symbol list for bochs'
internal debugger.

getting suppressed.  :(

Change from using #if to #ifdef, since #if can't cope with string
constants.

Don't use -MP to generate phony rules for included files, otherwise
make won't use the pattern rule for config/%.h.  :(

header files.

trick with "touch -B 2" doesn't work because the file that we're
carefully timestamping just gets deleted anyway.

list for any build, e.g.
  make bin/pnic.dsk DEBUG=pci,pnic
This will drag in debugging-enabled versions of pci.c and pnic.c.

Add bin/%.rebuild rule to quickly force a rebuild of any file.

Add bin/%.o.dbg rule to build a debugging-enabled version of the object.

conflict with pci_device function.