Makefile: Darwin needs -D_POSIX_C_SOURCE in order to define SIGPOLL
Makefile: Darwin needs -D_POSIX_C_SOURCE in order to define SIGPOLL

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