merge libpciaccess 0.17.

add flag to disable blindly enabling memory and IO access on everything we
find

Oops, avoid shadow declaration (fixes pci_system_netbsd_count_buses)

Fix crash when more than 32 pci(4) devices are attached.

If O_RDWR fails, try O_RDONLY.

Lets me run unprivileged X.

merge libpciaccess 0.14.

use PCI_IOC_DRVNAMEONBUS if it exists.

merge libpciaccess 0.13.4.

implement the kernel_has_driver() method. this has the benefit of
stopping the "vesa" driver from loading on hardware that has been
claimed by a kernel driver and thus shouldn't be using "vesa".

merge libpciaccess 0.13.2. there are now no local changes! thanks wiz.

Remove trailing whitespace (reduce diff to upstream).

support map/unmap_legacy() calls. copies the openbsd-style.

this fixes xf86-video-vesa, which was using this call and getting
zero back from the default callback.

merge libpciaccess 0.13.1

Implement pci_device_is_boot_vga() for NetBSD using new WSDISPLAYIO_GET_BUSID ioctl.
This lets Xorg start on machines with more than one PCI display device
instead of exiting with 'Primary device is not PCI'.

First discussed with macallan@ then public on tech-kern@ and tech-x11@.

Fix compilation with HAVE_MTRR

when trying to map a ROM go through the appropriate /dev/pci* instance
instead of opening /dev/mem
With this Xorg should be able to read graphics card ROMs on all ports.

in pci_device_netbsd_probe() probe the expansion ROM and size.
if it's there, set priv->rom_base and device->rom_size.

originally from mhitch, and it's basically the same code as present in
both freebsd_pci.c and openbsd_pci.c.

add a comment about needing to avoid the default bios mapping if this
card is not the console.

mmap() with MAP_SHARED, since the kernel forces this anyway, and it is
again the same in both freebsd_pci.c and openbsd_pci.c.

if a VGA device isn't enabled for io/mem/bus-master, do so here.
xorg-server 1.4.x and earlier would do this for us.

partly fixes dual-head support for various systems.

idea from mhitch.

teack libpciaccess how to discover and map PCI devices on machines with
more than one host bridge. While there get rid of some local (re)defines
if PCI-related constants.
With this Xorg should be able to use any PCI graphics device, no matter
if it's console or not.
TODO:
- cleanup
- deal with IO spaces
- fix Xorg -configure

- add a function to read the VGA ROM. Makes the intel driver work again.
- pass lint

apply pkgsrc patch-ac to make this work.

initial import of libpciaccess-0.10.6