Move instantiateTemplateAttribute into the sema namespace, make helpers static.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149864 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/LayoutOverrideSource.cpp b/lib/Frontend/LayoutOverrideSource.cpp
index 9cc0667..eb7865e 100644
--- a/lib/Frontend/LayoutOverrideSource.cpp
+++ b/lib/Frontend/LayoutOverrideSource.cpp
@@ -15,7 +15,7 @@
 using namespace clang;
 
 /// \brief Parse a simple identifier.
-std::string parseName(StringRef S) {
+static std::string parseName(StringRef S) {
   unsigned Offset = 0;
   while (Offset < S.size() &&
          (isalpha(S[Offset]) || S[Offset] == '_' ||