Cannot override supported platforms for custom view modules

[brentonhouse]

If you are using custom view modules, you cannot override the supported platforms for those tags, even in your custom implementation supports more platforms.

For example, if you were using this tag on mobileweb:

<ActionBar id="test_actionbar_1" text="This is a test actionbar 1" module="test" />

It would be compiled out of the app because ActionBar is only supported on Android by default in Appcelerator Alloy. This needs to be changed to allow more platforms if it is a custom module.

This would also help with things like supporting ListView tag on mobileweb (even if it was a shim for ListView using TableView)