Send a single WHO on joining channel rather than triggering a WHOIS of
every nick in the 353 RPL_NAMES handler. Avoids 'Excess Flood' when
joining a large channel ;-)
add simple test code to make building this package within src/pkg happy;
update irc/Makefile whitespace -- s/ /\t/;
update .gitignore to ignore _test directory created in test build;