win32 vio: Add the OPEN_REPARSE_POINTS flag to the CreateFileW call.

Otherwise win32 api simply does not open reparse points at all,
such as junctions.

This will improve the user experience of owncloud#3813 as we now identify
the junctions as symlinks.... and ignore them properly.

csync/src/vio/csync_vio_local_win.c

@@ -189,7 +189,7 @@ int csync_vio_local_stat(const char *uri, csync_vio_file_stat_t *buf) {
     mbchar_t *wuri = c_utf8_path_to_locale( uri );
 
     h = CreateFileW( wuri, 0, FILE_SHARE_READ, NULL, OPEN_EXISTING,
-                     FILE_ATTRIBUTE_NORMAL+FILE_FLAG_BACKUP_SEMANTICS, NULL );
+                     FILE_ATTRIBUTE_NORMAL+FILE_FLAG_BACKUP_SEMANTICS+FILE_FLAG_OPEN_REPARSE_POINT, NULL );
     if( h == INVALID_HANDLE_VALUE ) {
         CSYNC_LOG(CSYNC_LOG_PRIORITY_CRIT, "CreateFileW failed on %s", uri );
         errno = GetLastError();