Interoperate with higher versions of ZMTP protocol
Merge pull request #545 from hurtonm/master

Interoperate with higher versions of ZMTP protocol
Use of named authors on man pages is no longer a good idea since it puts off
contributors and doesn't reflect the real process. I've taken out all named
authors and referred to the contribution policy. Hopefully this will improve
the contributions to the man pages.
I'm reverting the various changes to the throughput test programs since as far
as I can see, these didn't work any more. At the very least, the command line
API was broken and forced the user to enter new, exotic arguments. Patches
should not break existing APIs. But also, the internals of these programs had
become weird.

If we want to build more complex performance tests, that's fine, but we should
make new programs, not break the old ones. We need minimal, safe performance
tests in 0MQ.

Also, the code was quite horrid. So it's gone. If anyone wants to bring it back
please make the code neat, and build new APIs instead of breaking the old ones.

Cheers
Pieter
Cleaned up copyright statements in perftest tools
Merge pull request #546 from hintjens/master

Throughput perf test was borked, fixed it
Merge branch 'master' into tls