Moved TranslationUnit.h to include path.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@45176 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/AST/TranslationUnit.h b/include/clang/AST/TranslationUnit.h
similarity index 100%
rename from AST/TranslationUnit.h
rename to include/clang/AST/TranslationUnit.h