When used with the "fs" option to chain.c32, we need to know our own
filesystem offset.  That means knowing if we used the MBR vs GPT
partition information, as well as if we ended up using the passed-in
information or not.

Resolve this by providing an explicit pointer to the current partition
offset.  Eventually this should be replaced by some kind of statfs()
call.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

Correct the order of the fields in struct syslinux_ipinfo to match
reality.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

It appears that there still are PXE stacks in the field which needs
the crutch of being pointed to the default gateway.  As such, put all
the IP information into a single memory structure and allow modules to
see it.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

Add our own IP address to the "get derivative-specific info" API call.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

Automatically reformat com32/include/syslinux/config.h using Nindent.

Do this for all files except HDT, gPXE and externally maintained
libraries (zlib, tinyjpeg, libpng).

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

Update copyright notices.  Per agreement with my new employer, Intel
Corporation, add Intel copyright notices where appropriate.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

Use the data buffer already set aside for syslinux_derivative_info().

- Constructed data objects can't be common.  Earlier version of
  gcc didn't if the objects were explicitly listed extern, but
  newer ones need an explicit __attribute__((nocommon)) or
  -fno-common.

- Make syslinux_derivative_info() save the entire reply.

Report the booting mode of ISOLINUX through the COM32 interface.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>