Actual value of linger option passed to the transport

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>
SP_SOL_SOCKET level options described in the docs

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>
Platform macros defined by the build system

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

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>
getopt exposed via sp_sock

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>
Bug in kqueue poller fixed (issue 7)

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>
Mac OS X does not have pthread_condattr_setclock
Mac OS X does not have clock_gettime