This reverts commit 083ee0f8.

V8 build broken on cygwin:
  ./deps/v8/src/handles.h:62: instantiated from `T*
  v8::internal::Handle<T>::operator->() const [with T = v8::internal::Code]'
  ./deps/v8/src/accessors.cc:396: instantiated from here
  ./deps/v8/src/handles-inl.h:50:
  error: call of overloaded `BitCast(v8::internal::Code** const&)' is
  ambiguous
  ./deps/v8/src/utils.h:732: note: candidates are: Dest
  v8::internal::BitCast(const Source&) [with Dest = v8::internal::Code**,
  Source = v8::internal::Code**]
  ./deps/v8/src/utils.h:743:
  note:                 Dest v8::internal::BitCast(Source* const&) [with Dest
  = v8::internal::Code**, Source = v8::internal::Code*]
  scons: *** [obj/release/accessors.o] Error 1

This will only manipulate the OS X-level process name, not the title shown
in e.g. ps.

Some platforms require SO_REUSEPORT to be set for the socket.

Plus some minor cosmetic corrections

- [lib/dns.js] dns.lookup takes a new optional argument "family" which
  should be the integer 4, 6, dns.AF_INET or dns.AF_INET6. Passing a
  non-false "family" argument makes c-ares explicitly look up addresses for
  the specified family.

- [test/simple/test-c-ares.js] test explicit address family lookups

Regression.

Tests for child_process.spawn() use new API

Test for deprecated child_process.spawn() API

This makes the console methods more "browser-like",
for example:

  console.log("foo", "bar", "baz");
  // foo bar baz

but still works with formatting

  console.log("hey %s", "tj", "whats up");

  // hey tj whats up

If the first parameter passed into console.log() is not a string, all
parameters will be printed as formated by sys.inspect. This change
also affects console.info and console.warn.