package_bin: Add bimport v1. backport https://golang.org/cl/24648/
package_bin: Add bimport v1. backport https://golang.org/cl/24648/

This commit is response to the change of src/cmd/compile/internal/gc/bimport.go
bimport has added v1.
See
- https://github.com/golang/go/commit/575a87166291e321745041944321002b3c0b72be
- https://github.com/golang/tools/commit/6c3528d5c186efa3a569b9bf311e3db54c825ff6

Signed-off-by: Koichi Shiraishi <13fbd79c3d390e5d6585a21e11ff5ec1970cff0c@zchee.io>

nsf/gocode,nsf/gocode,nsf/gocode,nsf/gocode