A+C: update Dmitri Shuralyov's emails

Add my current personal email in both A+C, but keep old one too.
Add my @golang.org email to CONTRIBUTORS.

Change-Id: Idba258e465a8d657372dbeb6cb734744d493e5d4
Reviewed-on: https://go-review.googlesource.com/128416Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

AUTHORS

@@ -323,7 +323,7 @@ Dimitri Tcaciuc <dtcaciuc@gmail.com>
 Dirk Gadsden <dirk@esherido.com>
 Diwaker Gupta <diwakergupta@gmail.com>
 Dmitri Popov <operator@cv.dp-net.com>
-Dmitri Shuralyov <shurcooL@gmail.com>
+Dmitri Shuralyov <dmitri@shuralyov.com> <shurcooL@gmail.com>
 Dmitriy Dudkin <dudkin.dmitriy@gmail.com>
 Dmitriy Shelenin <deemok@googlemail.com> <deemok@gmail.com>
 Dmitry Chestnykh <dchest@gmail.com>

CONTRIBUTORS

@@ -437,7 +437,7 @@ Dimitri Tcaciuc <dtcaciuc@gmail.com>
 Dirk Gadsden <dirk@esherido.com>
 Diwaker Gupta <diwakergupta@gmail.com>
 Dmitri Popov <operator@cv.dp-net.com>
-Dmitri Shuralyov <shurcooL@gmail.com>
+Dmitri Shuralyov <dmitshur@golang.org> <dmitri@shuralyov.com> <shurcooL@gmail.com>
 Dmitriy Dudkin <dudkin.dmitriy@gmail.com>
 Dmitriy Shelenin <deemok@googlemail.com> <deemok@gmail.com>
 Dmitriy Vyukov <dvyukov@google.com>