Fix for issue git-for-windows#607 [git clean removes content of symli…

…nks]

There was already code in the readlink function of mingw.c that correctly handled mount points (AKA 'junctions') so it was rather straight-forward to replicate that code into the two other locations where links are handled. I tested before and after these changes and git clean now handles junctions like other soft links.

compat/win32.h

@@ -9,7 +9,8 @@
 static inline int file_attr_to_st_mode (DWORD attr, DWORD tag)
 {
 	int fMode = S_IREAD;
-	if ((attr & FILE_ATTRIBUTE_REPARSE_POINT) && tag == IO_REPARSE_TAG_SYMLINK)
+	if ((attr & FILE_ATTRIBUTE_REPARSE_POINT) && 
+		(tag == IO_REPARSE_TAG_SYMLINK || tag == IO_REPARSE_TAG_MOUNT_POINT))
 		fMode |= S_IFLNK;
 	else if (attr & FILE_ATTRIBUTE_DIRECTORY)
 		fMode |= S_IFDIR;

compat/win32/dirent.c

@@ -16,8 +16,9 @@ static inline void finddata2dirent(struct dirent *ent, WIN32_FIND_DATAW *fdata)
 	xwcstoutf(ent->d_name, fdata->cFileName, MAX_PATH * 3);
 
 	/* Set file type, based on WIN32_FIND_DATA */
-	if ((fdata->dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)
-			&& fdata->dwReserved0 == IO_REPARSE_TAG_SYMLINK)
+	if ((fdata->dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) && 
+		(fdata->dwReserved0 == IO_REPARSE_TAG_SYMLINK || 
+		 fdata->dwReserved0 == IO_REPARSE_TAG_MOUNT_POINT))
 		ent->d_type = DT_LNK;
 	else if (fdata->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
 		ent->d_type = DT_DIR;