[Thomas:
- remove mandatory libpciaccess and numactl dependencies. Those
dependencies are optional.
- add dependency on threads.
- use a HWLOC_VERSION_MAJOR variable to avoid repeating the major
version number in HWLOC_SITE.
- explicitly disable features we don't support.
- explicitly enable/disable pci and numa support, depending on the
availability of the corresponding dependencies.
- add dependency on host-pkgconf, since pkg-config can be used by
hwloc configure script.]
Signed-off-by: Steven Noonan <steven@uplinklabs.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
