I really would have liked to split this patch up, but it would greatly
complicate the lld-core and lld drivers having to deal with both
{Reader,Writer}Option and TargetInfo.
llvm-svn: 173217
* Moves enum Scope from DefinedAtom.h to Atom.h
* Adds scope method to AbsoluteAtom class
* Updates YAML to print scope of AbsoluteAtoms
* Update Native Reader/Writer to handle this new, "attribute"
* Adds testcase
Reviewed and approved by Nick Kledzik
llvm-svn: 166189
now Reader and Writer subclasses for each file format. Each Reader and
Writer subclass defines an "options" class which controls how that Reader
or Writer operates.
llvm-svn: 157774
