Cache the return value of supportCoffeeScript

bin/sequelize

@@ -7,6 +7,7 @@ var path      = require("path")
   , moment    = require("moment")
   , moment    = require("moment")
   , _         = Sequelize.Utils._
   , _         = Sequelize.Utils._
   , url       = require("url")
   , url       = require("url")
+  , supportCS = undefined
 
 
 var configuration = {
 var configuration = {
   configFile:     process.cwd() + '/config/config.json',
   configFile:     process.cwd() + '/config/config.json',
@@ -170,6 +171,7 @@ if(typeof program.env === 'string') {
 }
 }
 
 
 var supportCoffeeScript = function() {
 var supportCoffeeScript = function() {
+  if (supportCS === undefined) {
     try {
     try {
       config = readConfig()
       config = readConfig()
     } catch(e) {
     } catch(e) {
@@ -177,7 +179,10 @@ var supportCoffeeScript = function() {
       process.exit(1)
       process.exit(1)
     }
     }
 
 
-  return program.coffee || config.coffee
+    supportCS = program.coffee || config.coffee
+  }
+
+  return supportCS
 }
 }
 
 
 if (program.migrate || program.undo) {
 if (program.migrate || program.undo) {