I'm trying to create a custom build that ONLY contains the files required for my custom widgits but the base dojo / dijit / dojox dependency files are always included. How can I exclude the base dojo files (since they're included in a separate baked build)?

Here's the command I'm using:
java -jar ../shrinksafe/custom_rhino.jar build.js action=release releaseName=common name=common version=0.0.1.dev optimize=shrinksafe layerOptimize=shrinksafe copyTests=false internStrings=true profileFile=D:\xxx\common.profile.js releaseDir=D:\xxx\target\release\

Here's my profile file:
dependencies = {
layers: [
{
name: "../common.js",
dependencies: [
"xxx.Dialog",
"xxx.Grid",
"xxx.GridModel"
]
}
],

prefixes: [
[ "dijit", "../dijit" ],
[ "dojox", "../dojox" ],
[ "xxx", "../../src/xxx" ]
]
}