x/debug: just use uint64 for addresses in debugged programs.
x/debug: just use uint64 for addresses in debugged programs.

Change-Id: Idfa182262f31263c80f539e1c83f974882f4b519
Reviewed-on: https://go-review.googlesource.com/11855
Reviewed-by: Rob Pike <4dc7c9ec434ed06502767136789763ec11d2c4b7@golang.org>

golang/debug