The imdiag module now can very effectively inject messages, which also
frees us from uncertainties of tcp reception and processing. All shell
script based tests have been modularized, what makes it far easier to
create new tests. Also, the test bench now executes more reliable and
much faster, because we can now rely on actual engine information where
we previously did just a dumb sleep.
It is checked that many tcp connections are properly handled. While
adding this test, I noticed that there is a bug in imtcp that prevents
creation of more than 200 connections. This bug still exists, so the
test suite currently fails (what is correct). Will be addressed soon.
