Fix 2 problems with Chris Lattner's FileManager redesign on Windows.

- FileEntry::operator= is needed on Win32.
- There was an error in the S_ISDIR() macro.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120079 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang/Basic/FileManager.h

@@ -64,7 +64,6 @@ class FileEntry {
   mutable int FD;
   friend class FileManager;
   
-  void operator=(const FileEntry&); // DO NOT IMPLEMENT.
 public:
   FileEntry(dev_t device, ino_t inode, mode_t m)
     : Name(0), Device(device), Inode(inode), FileMode(m), FD(-1) {}

lib/Basic/FileSystemStatCache.cpp

@@ -25,7 +25,7 @@
 using namespace clang;
 
 #if defined(_MSC_VER)
-#define S_ISDIR(s) (_S_IFDIR & s)
+#define S_ISDIR(s) ((_S_IFDIR & s) !=0)
 #endif
 
 /// FileSystemStatCache::get - Get the 'stat' information for the specified