ignore POLLHUP and POLLNVAL since they are only for output
ignore POLLHUP and POLLNVAL since they are only for output

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=491257

rrthomas/luaposix,snegovick/luaposix,luaposix/luaposix,zevv/luaposix,jimmyharris/luaposix,rrthomas/luaposix,zevv/luaposix,snegovick/luaposix,ardje/luaposix,jimmyharris/luaposix,ardje/luaposix