Changed directory separator from '/' to '\' for windows version.

src/libvlc.h

@@ -850,7 +850,11 @@ vlc_module_begin();
                  SUB_AUTO_TEXT, SUB_AUTO_LONGTEXT, VLC_FALSE );
     add_integer( "sub-autodetect-fuzzy", 3, NULL,
                  SUB_FUZZY_TEXT, SUB_FUZZY_LONGTEXT, VLC_TRUE );
+#if defined( WIN32 )
+    add_string( "sub-autodetect-path", ".\\Subtitles, .\\subtitles", NULL,
+#else
     add_string( "sub-autodetect-path", "./Subtitles, ./subtitles", NULL,
+#endif
                  SUB_PATH_TEXT, SUB_PATH_LONGTEXT, VLC_TRUE );
     add_file( "sub-file", NULL, NULL,
                  SUB_FILE_TEXT, SUB_FILE_LONGTEXT, VLC_TRUE );