Disable test-tcp-many-clients.js. It's broken on macintosh - don't want to fix right...

diff --git a/test/mjsunit/test-tcp-many-clients.js b/test/mjsunit/disabled/test-tcp-many-clients.js
similarity index 100%
rename from test/mjsunit/test-tcp-many-clients.js
rename to test/mjsunit/disabled/test-tcp-many-clients.js