Fix include guards so they exactly match file names.

llvm-svn: 172025
diff --git a/llvm/include/llvm-c/Transforms/PassManagerBuilder.h b/llvm/include/llvm-c/Transforms/PassManagerBuilder.h
index cee6e5a..0e5e3ca 100644
--- a/llvm/include/llvm-c/Transforms/PassManagerBuilder.h
+++ b/llvm/include/llvm-c/Transforms/PassManagerBuilder.h
@@ -11,8 +11,8 @@
 |*                                                                            *|
 \*===----------------------------------------------------------------------===*/
 
-#ifndef LLVM_C_PASSMANAGERBUILDER
-#define LLVM_C_PASSMANAGERBUILDER
+#ifndef LLVM_C_TRANSFORMS_PASSMANAGERBUILDER_H
+#define LLVM_C_TRANSFORMS_PASSMANAGERBUILDER_H
 
 #include "llvm-c/Core.h"