Issue: interaction between name attribute on start and include/combine

If we decide to keep the name attribute on <start>, then we need to decide 
what the right way is for it to interact with <include> and the combine 
attribute.

My current thinking is that the right solution is to transform

<start name="foo" atts>p</start>

into

<start atts>p</start>
<define name="foo" atts>p</define>

and do this transformation before any processing of include or combine.

James