1) Supports PCI to PCI bridge devices (and tries to initialise them,
even if the BIOS is brain dead).
2) Supports shared PCI interrupts. Interrupt handlers now MUST return
'0' if they found nothing to do, '1' otherwise.
New features tested with i486 systems based on the Intel Saturn and
a DEC 4channel Ethernet card only, but expected to work on most systems.
The option PCI_REMAP has been removed !
Submitted by: Wolfgang Stanglmeier <wolf@kintaro.cologne.de>
definitions taken from the PCI specs. Part of them were typed
in by Wolfgang Stanglmeier, the (at that time unneeded) rest
by Charles Hannum (thanks !).
