Use internal hwloc for MSVC.

src/3rdparty/hwloc/VERSION

@@ -0,0 +1,47 @@
+# This is the VERSION file for hwloc, describing the precise version
+# of hwloc in this distribution.  The various components of the version
+# number below are combined to form a single version number string.
+
+# major, minor, and release are generally combined in the form
+# <major>.<minor>.<release>.  If release is zero, then it is omitted.
+
+# Please update HWLOC_VERSION* in contrib/windows/hwloc_config.h too.
+
+major=2
+minor=0
+release=4
+
+# greek is used for alpha or beta release tags.  If it is non-empty,
+# it will be appended to the version number.  It does not have to be
+# numeric.  Common examples include a1 (alpha release 1), b1 (beta
+# release 1), sc2005 (Super Computing 2005 release).  The only
+# requirement is that it must be entirely printable ASCII characters
+# and have no white space.
+
+greek=
+
+# The date when this release was created
+
+date="Jun 03, 2019"
+
+# If snapshot=1, then use the value from snapshot_version as the
+# entire hwloc version (i.e., ignore major, minor, release, and
+# greek).  This is only set to 1 when making snapshot tarballs.
+snapshot=0
+snapshot_version=${major}.${minor}.${release}${greek}-git
+
+# The shared library version of hwloc's public library.  This version
+# is maintained in accordance with the "Library Interface Versions"
+# chapter from the GNU Libtool documentation.  Notes:
+
+# 1. Since version numbers are associated with *releases*, the version
+# number maintained on the hwloc git master (and developer branches)
+# is always 0:0:0.
+
+# 2. Version numbers are described in the Libtool current:revision:age
+# format.
+
+libhwloc_so_version=15:3:0
+libnetloc_so_version=0:0:0
+
+# Please also update the <TargetName> lines in contrib/windows/libhwloc.vcxproj