hwloc: 1.6 -> 1.11.2 and disable tests

This package was failing to build on wendy:

  lt-linux-libnuma: linux-libnuma.c:70: main: Assertion `numa_bitmask_equal(bitmask, numa_all_nodes_ptr)' failed.

Since we shouldn't run tests that depend on the hardware
characteristics of the build machine, I've disabled these.