Reproducible BUILD_PATH_PREFIX_MAP

Make builds reproducible by honoring BUILD_PATH_PREFIX_MAP
Upstream has rejected the patch in this form and promised to implement an
alternative they are happy with instead. That hasn't happened yet though.

Bug: https://github.com/golang/go/issues/22491, https://github.com/golang/go/issues/16860
Forwarded: https://golang.org/cl/73291 (rejected upstream though)

Gbp-Pq: Name 0001-Reproducible-BUILD_PATH_PREFIX_MAP.patch

golang-1.12 (1.12.10-1) unstable; urgency=medium

  * New upstream version 1.12.10
    - net/textproto: don't normalize headers with spaces before the colon.
      Fixes CVE-2019-16276. See https://github.com/golang/go/issues/34541
Closes: #941173
  * Apply changes from cme fix dpkg
  * Set Rules-Requires-Root: no
  * Regenerate d/control

[dgit import unpatched golang-1.12 1.12.10-1]

Import golang-1.12_1.12.10.orig.tar.gz

[dgit import orig golang-1.12_1.12.10.orig.tar.gz]

Import golang-1.12_1.12.10-1.debian.tar.xz

[dgit import tarball golang-1.12 1.12.10-1 golang-1.12_1.12.10-1.debian.tar.xz]