[PATCH] Add DefinedAtom::sectionSize().

[Shankar Kalpathi Easwaran]

We wont be able to keep the sectionSize in COFFDefinedAtom because the Native/YAML only understand DefinedAtoms. I was proposing a way to do this earlier by having atoms contain a set of key value pairs (key=>value) that can be used to set various values.

We could start a discussion on the thread, and arrive at a way to solve this if you think we should do that.

http://reviews.llvm.org/D4042