Add SymbolRef::print() and have SymbolicRegion::print() use this method instead of calling SymbolRef::getNumber().

llvm-svn: 60578
diff --git a/clang/lib/Analysis/MemRegion.cpp b/clang/lib/Analysis/MemRegion.cpp
index 99dc796..6aff286 100644
--- a/clang/lib/Analysis/MemRegion.cpp
+++ b/clang/lib/Analysis/MemRegion.cpp
@@ -149,7 +149,8 @@
 }
 
 void SymbolicRegion::print(llvm::raw_ostream& os) const {
-  os << "$" << sym.getNumber();
+  os << "SymRegion-";
+  sym.print(os);
 }
 
 void FieldRegion::print(llvm::raw_ostream& os) const {