net: move isLegalPort to internal/net

isLegalPort can be used in more places than just net.js. This change
moves it to a new internal net module in preparation for using it in
the dns module.

PR-URL: https://github.com/nodejs/node/pull/4882
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/node.gyp b/node.gyp
index 672c3ce669..a65f76e4ce 100644
--- a/node.gyp
+++ b/node.gyp
@@ -73,6 +73,7 @@
       'lib/internal/cluster.js',
       'lib/internal/freelist.js',
       'lib/internal/linkedlist.js',
+      'lib/internal/net.js',
       'lib/internal/module.js',
       'lib/internal/readline.js',
       'lib/internal/repl.js',