Sean Callanan d0ef0eff61 First step of refactoring variable handling in the ...

expression parser.  There shouldn't be four separate
classes encapsulating a variable.

ClangExpressionVariable is now meant to be the
container for all variable information.  It has
several optional components that hold data for
different subsystems.

ClangPersistentVariable has been removed; we now
use ClangExpressionVariable instead.

llvm-svn: 111600

2010-08-20 01:02:30 +00:00

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