Merge pull request BVLC#5530 from willyd/nccl-py3 Explicit std::string to bp::object conversion

Merge pull request BVLC#5296 from shelhamer/rc5 version bump: rc5

Merge pull request BVLC#5198 from longjon/config-backslash Remove trailing backslash on comment in Makefile.config.example

Merge pull request BVLC#3587 from junshi15/distribute_proto Include proto definition in distribute dir

Merge pull request BVLC#1921 from shelhamer/fix-tool-linking [build] fix dynamic linking of tools

Merge pull request BVLC#1112 from BVLC/next Next: release candidate

Merge pull request BVLC#880 from BVLC/next Next: 0.9999

follow-up on BVLC#443 to invert k channels (instead of 3) 

Merge pull request BVLC#429 from shelhamer/next Next: 0.999

fix script path incantation