change references to post Great Fork Merge URLs

In preparation for the **Great Fork Merge**:

We change references for the repo from
`https://github.com/ioccc-src/temp-test-ioccc`
to `https://github.com/ioccc-src/winner`.

We change references for the web site from
`https://ioccc-src.github.io/temp-test-ioccc`
to `https://github.com/ioccc-src/winner`.

NOTE: There will be a **LOT OF LINKS BROKEN**, because of the changes
to the REPO URL and the WEBSITE URL, until the **Great Fork Merge**
updates the+[official IOCCC website](https://www.ioccc.org).

var.mk

@@ -289,7 +289,7 @@ X11_INCDIR= /opt/X11/include
 # For details on how to install SDL/SDL2 see the FAQ on how to compile and use
 # IOCCC entries that require SDL1 or SDL1:
 #
-#   https://ioccc-src.github.io/temp-test-ioccc/faq.html#SDL
+#   https://www.ioccc.org/faq.html#SDL
 #
 # SDL2_INCLUDE_ROOT is the directory under which include/SDL/ and/or
 # include/SDL2/ may be found.