Dense::valueCount() now correctly returns an Index64
Merge pull request #6 from sideeffects/send_upstream

Dense::valueCount() now correctly returns an Index64
various changes
Merge remote branch 'origin/master'
various changes
various changes
Version 2.0.0 prerelease
Version 2.0.0 prerelease
Version 2.0.0 prerelease
Merge remote-tracking branch 'upstream/master'

For OpenVDB 2.0 prerelease.

Conflicts:
	openvdb/version.h
Fix clang warnings in RayIntersector.h
Fix building of vdbrender for Windows
Windows fix for tools/RayTracer.h since near/far are macros
Fix make clean to delete vdb_render

Add vdb_render to ALL_TARGETS and remove unused LIBOPENVDB_IMPORT as a target.
Build fixes for openvdb_houdini on Windows
Merge from Houdini trunk