all: don't refer to code.google.com/p/go{,-wiki}/

Only documentation / comment changes. Update references to
point to golang.org permalinks or go.googlesource.com/go.
References in historical release notes under doc are left as is.

Change-Id: Icfc14e4998723e2c2d48f9877a91c5abef6794ea
Reviewed-on: https://go-review.googlesource.com/4060
Reviewed-by: Ian Lance Taylor <iant@golang.org>
diff --git a/doc/gccgo_contribute.html b/doc/gccgo_contribute.html
index 44007ff..8878dfe 100644
--- a/doc/gccgo_contribute.html
+++ b/doc/gccgo_contribute.html
@@ -40,7 +40,7 @@
 repository, and the <code>gofrontend</code> <code>libgo</code>
 directory is mirrored to the GCC <code>libgo</code> directory.  In
 addition, the <code>test</code> directory
-from <a href="//code.google.com/p/go">the main Go repository</a>
+from <a href="//go.googlesource.com/go">the main Go repository</a>
 is mirrored to the <code>gcc/testsuite/go.test/test</code> directory
 in the GCC repository.
 </p>
@@ -65,7 +65,7 @@
 
 <p>
 The run-time library for gccgo is mostly the same as the library
-in <a href="//code.google.com/p/go">the main Go repository</a>.
+in <a href="//go.googlesource.com/go">the main Go repository</a>.
 The library code in the Go repository is periodically merged into
 the <code>libgo/go</code> directory of the <code>gofrontend</code> and
 then the GCC repositories, using the shell