Added simple unix tests.

test/unixclnt.lua

@@ -0,0 +1,8 @@
+socket = require"socket"
+socket.unix = require"socket.unix"
+c = assert(socket.unix())
+assert(c:connect("/tmp/foo"))
+while 1 do
+    local l = io.read()
+    assert(c:send(l .. "\n"))
+end

test/unixsrvr.lua

@@ -0,0 +1,9 @@
+    socket = require"socket"
+    socket.unix = require"socket.unix"
+    u = assert(socket.unix())
+    assert(u:bind("/tmp/foo"))
+    assert(u:listen())
+    c = assert(u:accept())
+    while 1 do
+        print(assert(c:receive()))
+    end

test/unixtest.lua

@@ -1,10 +0,0 @@
-socket = require("socket")
-f = loadlib("etc-1.0.dylib", "unix_open")
-f(socket)
-u = socket.unix()
-print(u:bind("/tmp/luasocket"))
-print(u:listen())
-c = u:accept()
-while 1 do
-    print(assert(c:receive()))
-end