* kqtest help message includes the names of test suites that can be run
* no need to test for EV_RECEIPT since it's always defined in our local copy of event.h
* include netdb.h to enable builds on *BSD.
git-svn-id: svn://svn.code.sf.net/p/libkqueue/code/trunk@652 fb4e3144-bc1c-4b72-a658-5bcd248dd7f7