Add old email address to .mailcap since it's in the history.

.mailmap

@@ -382,7 +382,7 @@ Ilya Zakharevich <ilya@math.berkeley.edu> Ilya Zakharevich <ilya@math.ohio-state
 Ingo Weinhold <ingo_weinhold@gmx.de> bonefish@cs.tu-berlin.de <bonefish@cs.tu-berlin.de>
 Ingo Weinhold <ingo_weinhold@gmx.de> Ingo Weinhold <unknown>
 Ingy döt Net <ingy@ttul.org> Brian Ingerson <ingy@ttul.org>
-Jake Hamby <jake.hamby@gmail.com>
+Jake Hamby <jake.hamby@gmail.com> Jake Hamby <jehamby@lightside.com>
 James E Keenan <jkeenan@cpan.org> James E Keenan <jkeen@verizon.net>
 James E Keenan <jkeenan@cpan.org> James E. Keenan <jkeenan@cpan.org>
 James E Keenan <jkeenan@cpan.org> James Keenan <jkeenan@dromedary-001.ams6.corp.booking.com>