update some comments.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@43506 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang/Basic/FileManager.h

@@ -36,7 +36,7 @@ public:
 /// FileEntry - Cached information about one file on the disk.
 ///
 class FileEntry {
-  const char *Name;           // Name of the directory.
+  const char *Name;           // Name of the file.
   off_t Size;                 // File size in bytes.
   time_t ModTime;             // Modification time of file.
   const DirectoryEntry *Dir;  // Directory file lives in.

include/clang/Basic/SourceManager.h

@@ -81,7 +81,7 @@ namespace SrcMgr {
     /// chunk number of this FileID.
     unsigned ChunkNo;
     
-    /// FileInfo - Information about the source buffer itself.
+    /// Info - Information about the source buffer itself.
     ///
     const InfoRec *Info;
   public: