hwloc README-ompi.txt: update for what we pulled from hwloc

Document what we pulled from the hwloc tree.

opal/mca/hwloc/hwloc191/README-ompi.txt

@@ -1,3 +1,35 @@
 Applied the following patches from the upstream hwloc 1.9 branch after
 the v1.9.1 release:
 
+All relevant commits up to open-mpi/hwloc@4e23b12 (i.e., the HEAD as
+of 27 March 2015).  "Relevant" commits are defined as those that
+included files that are embedded in the Open MPI tree (e.g., updates
+to files in docs/, utils/, etc. aren't relevant because they are not
+embedded in the Open MPI tree).  To be specific, the following commits
+have been cherry-picked over to Open MPI:
+
+* open-mpi/hwloc@7c03216 v1.9.1 released, doing 1.9.2rc1 now
+* open-mpi/hwloc@b35ced8 misc.h: Fix hwloc_strncasecmp() build under strict flags on BSD
+* open-mpi/hwloc@d8c3f3d misc.h: Fix hwloc_strncasecmp() with some icc
+* open-mpi/hwloc@f705a23 Use gcc's __asm__ version of the asm extension, which can be used in all standards
+* open-mpi/hwloc@307726a configure: fix the check for X11/Xutil.h
+* open-mpi/hwloc@ec58c05 errors: improve the advice to send hwloc-gather-topology files in the OS error message
+* open-mpi/hwloc@35c743d NEWS update
+* open-mpi/hwloc@868170e API: clearly state that os_index isn't unique while logical_index is
+* open-mpi/hwloc@851532d x86 and OSF: Don't forget to set NUMA node nodeset
+* open-mpi/hwloc@790aa2e cpuid-x86: Fix duplicate asm labels in case of heavy inlining on x86-32
+* open-mpi/hwloc@dd09aa5 debug: fix an overzealous assertion about the parent cpuset vs its children
+* open-mpi/hwloc@769b9b5 core: fix the merging of identical objects in presence of Misc objects
+* open-mpi/hwloc@71da0f1 core: reorder children in merge_useless_child() as well
+* open-mpi/hwloc@c9cef07 hpux: improve hwloc_hpux_find_ldom() looking for NUMA node
+* open-mpi/hwloc@cdffea6 x86: use ulong for cache sizes, uint won't be enough in the near future
+* open-mpi/hwloc@55b0676 x86: use Group instead of Misc for unknown x2apic levels
+* open-mpi/hwloc@7764ce5 synthetic: Misc levels are not allowed in the synthetic description
+* open-mpi/hwloc@5b2dce1 error: point to the FAQ when displaying the big OS error message
+* open-mpi/hwloc@c7bd9e6 pci: fix SR-IOV VF vendor/device names
+* open-mpi/hwloc@a0f72ef distances: when we fail to insert an intermediate group, don't try to group further above
+* open-mpi/hwloc@e419811 AIX: Fix PU os_index
+* open-mpi/hwloc@08ab793 groups: add complete sets when inserting distance/pci groups
+* open-mpi/hwloc@c66e714 core: only update root->complete sets if insert succeeds
+* open-mpi/hwloc@01da9b9 bitmap: fix a corner case in hwloc_bitmap_isincluded() with infinite sets
+* open-mpi/hwloc@e7b192b pci: fix bridge depth