Rename SymbolID to SymbolRef.  This is a precursor to some overhauling of the representation of symbolic values.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60575 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/BasicValueFactory.cpp b/lib/Analysis/BasicValueFactory.cpp
index 7ce305e..2c7d6a3 100644
--- a/lib/Analysis/BasicValueFactory.cpp
+++ b/lib/Analysis/BasicValueFactory.cpp
@@ -98,7 +98,7 @@
 }
 
 const SymIntConstraint&
-BasicValueFactory::getConstraint(SymbolID sym, BinaryOperator::Opcode Op,
+BasicValueFactory::getConstraint(SymbolRef sym, BinaryOperator::Opcode Op,
                             const llvm::APSInt& V) {
   
   llvm::FoldingSetNodeID ID;