update .winner.json based on updated manifest.csv

We used:

```sh
cd tmp
./run_all.sh ./gen_winner_json.sh
```

2013/cable3/.winner.json

@@ -43,7 +43,7 @@
 	    "file_path" : "cable3.alt.c",
 	    "winners_rank" : 40,
 	    "created_by" : null,
-	    "prog" : null,
+	    "prog" : "alt",
 	    "filetype" : "c",
 	    "winners_show" : true,
 	    "display_via" : "github",
@@ -179,6 +179,16 @@
 	    "display_via" : "github",
 	    "winners_text" : "list of files that should not be committed under git"
 	},
+	{
+	    "file_path" : ".path",
+	    "winners_rank" : null,
+	    "created_by" : "genpath",
+	    "prog" : null,
+	    "filetype" : "text",
+	    "winners_show" : false,
+	    "display_via" : null,
+	    "winners_text" : "directory path from top directory"
+	},
 	{
 	    "file_path" : ".winner.json",
 	    "winners_rank" : null,

2013/cable3/inventory.html

@@ -290,26 +290,31 @@ under git</td>
 href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2013/cable3/.gitignore">.gitignore</a></td>
 </tr>
 <tr class="even">
+<td style="text-align: left;">directory path from top directory</td>
+<td style="text-align: left;"><a
+href="https://ioccc-src.github.io/temp-test-ioccc/2013/cable3/.path">.path</a></td>
+</tr>
+<tr class="odd">
 <td style="text-align: left;">description of winner in JSON</td>
 <td style="text-align: left;"><a
 href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2013/cable3/.winner.json">.winner.json</a></td>
 </tr>
-<tr class="odd">
+<tr class="even">
 <td style="text-align: left;">markdown source for index.html</td>
 <td style="text-align: left;"><a
 href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2013/cable3/README.md">README.md</a></td>
 </tr>
-<tr class="even">
+<tr class="odd">
 <td style="text-align: left;">custom BIOS</td>
 <td style="text-align: left;"><a
 href="https://ioccc-src.github.io/temp-test-ioccc/2013/cable3/bios">bios</a></td>
 </tr>
-<tr class="odd">
+<tr class="even">
 <td style="text-align: left;">DOS boot sector</td>
 <td style="text-align: left;"><a
 href="https://ioccc-src.github.io/temp-test-ioccc/2013/cable3/fd.img">fd.img</a></td>
 </tr>
-<tr class="even">
+<tr class="odd">
 <td style="text-align: left;">disk image</td>
 <td style="text-align: left;"><a
 href="https://ioccc-src.github.io/temp-test-ioccc/2013/cable3/hd.img">hd.img</a></td>