Use new generate-exports.js task

buildcfg/ol-all.json

@@ -18,7 +18,7 @@
 
   "inputs": [
     "../build/src/internal/src/requireall.js",
-    "../build/src/external/src/exports.js"
+    "../build/exports.js"
   ]
 
 }

buildcfg/ol-simple.json

@@ -28,7 +28,7 @@
 
   "inputs": [
     "../build/src/internal/src/requireall.js",
-    "../build/src/external/src/exports.js"
+    "../build/exports.js"
   ],
 
   "mode": "SIMPLE",

buildcfg/ol.json

@@ -27,7 +27,8 @@
   "inherits": "base.json",
 
   "inputs": [
-    "../build/src/external/src/exports.js"
+    "../build/src/internal/src/requireall.js",
+    "../build/exports.js"
   ],
 
   "output-wrapper": "// OpenLayers 3. see http://ol3js.org/\n(function(){%output%})();",