Two small bugs fixed in nanocat

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>
ETSN protocol spec removed (can be replaced by TCPMUX in case of need).

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>
Initial implementation of monitoring via ESTP

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>
Fix build on Windows

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>
Fix couple of MSVC warnings

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>
Merge branch 'master' of github.com:250bpm/nanomsg
More MSVC warnings fixed.

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>
Warnings fixed in nanocat

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>
Merge branch 'master' of github.com:nanomsg/nanomsg
Missing attr.h from previous patch added.

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>