Merge e57aa434 from honeycomb-mr1. do not merge.

LayoutLib: Fix issue where <include> with no layout params wouldn't display.

The issue is that the layout params from the root element of the included
layout should be used but this failed because loading the layout params
from the <include> tag didn't throw a RuntimeException in our modified
code (BridgeTypedArray).

Because we don't want to throw exception in general we only throw it
when reading the layout params of an include node which is pretty crappy,
but works for now.

Change-Id: I83ccf956e8b476f34dfc9a70aebae2288d53746e