Log Message:
Update to libpciaccess-0.11.

Synced the netbsd support patch from xsrc HEAD, with a minor tweak:
 Now we first try to map memory in the newfangled /dev/pciN way.
 If that fails, then we fall back to /dev/mem.
 We need to do this to deal with netbsd-5 and earlier.

Add NetBSD/sparc64 to the list of supported platforms.

Upstream changes:

0.11.0:
 Add pci_device_get_parent_bridge()
 I/O port access routines
 Fix pci_device_open_io() to actually return something useful
 Fix I/O handle array allocator to work for devices past the first
 libpciaccess 0.11.0
 .gitignore: use common defaults with custom section # 24239
 Makefile.am: ChangeLog not required: EXTRA_DIST or *CLEANFILES #24432
 Deploy the new XORG_DEFAULT_OPTIONS #24242
 INSTALL, NEWS, README or AUTHORS files are missing/incorrect #24206
 Makefile.am: add ChangeLog and INSTALL on MAINTAINERCLEANFILES
0.10.9:
 vgaarb: check pci_sys exists before initing vga arb
 shutup stupid gcc warning, strtok_r ignores the first parameter
 Free return value from scandir instead of leaking it.
 vgaarb: check for fd before close it
 vgaarb: fix newbie typo