devdraw: map X11 dead_diaresis to double quote

R=rsc
CC=plan9port.codebot
http://codereview.appspot.com/6690049
diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index 9a9b428..59b06cc 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -11,6 +11,7 @@
 Anthony Sorace <a@9srv.net>
 Arvindh Rajesh Tamilmani <art@a-30.net>
 Benjamin Huntsman <BHuntsman@mail2.cu-portland.edu>
+Caio Oliveira <cmarcelo@gmail.com>
 Christopher Brannon <chris@the-brannons.com>
 David du Colombier <0intro@gmail.com>
 David Jeannot <djeannot24@gmail.com>