Small fix to CellPanelParser to make it work with lazy widget
binder. Unsmall refactoring to eliminate use of the method that
allowed CellPanelParser to screw things up in the first place.

In more detail: UiBinderWriter.parseElementToField() now returns a
FieldWriter instead of a string. Parsers must call
FieldWriter.getNextReference() whenever they want to generate a call
to the field, so they don't break reference counting.

Review at http://gwt-code-reviews.appspot.com/1577803

Review by: rchandia@google.com

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@10716 8db76d5a-ed1c-0410-87a9-c151d255dfc7
40 files changed