Send SIGSTOP to whole process group on suspend (closes #401)
Bump version to 1.2.4
Cast time_elapsed to int before calling human_readable_duration

When attempting to build againt EPEL 5, it was noticed that
human_readable_duration expects an int, but time_elapsed is an
integer.  Explicitly static_cast<int>( time_elapsed ) to appease older
compilers.
Update mosh.spec for mosh 1.2.4
Eliminate ocb.cc test program (closes #408)

This test doesn't return an error on failure and also was triggering a
stack protector warning on some platforms. We have an end-to-end test of
OCB in src/tests/ocb-aes.cc that seems to work well.
Bump version to 1.2.4a