Object: Move auxiliary symbol definitions from llvm-readobj

Summary: These definitions are useful to other aspects of LLVM, move them out.

Reviewers: rafael, nrieck, ruiu

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D3105

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204213 91177308-0d34-0410-b5e6-96231b3b80d8
Object: Provide a richer means of describing auxiliary symbols

The current state of affairs has auxiliary symbols described as a big
bag of bytes. This is less than satisfying, it detracts from the YAML
file as being human readable.

Instead, allow for symbols to optionally contain their auxiliary data.
This allows us to have a much higher level way of describing things like
weak symbols, function definitions and section definitions.

This depends on D3105.

Differential Revision: http://llvm-reviews.chandlerc.com/D3092

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204214 91177308-0d34-0410-b5e6-96231b3b80d8