go/importer: fix field/method package for binary importer
go/importer: fix field/method package for binary importer

This is the equivalent of https://golang.org/cl/18549 for
the binary importer (which is usually not used because by
default the gc compiler produces the traditional textual
export format).

For #13898.

Change-Id: Idb6b515f2ee49e6d0362c71846994b0bd4dae8f7
Reviewed-on: https://go-review.googlesource.com/18598
Reviewed-by: Alan Donovan <7069e9552f9d110b0a0f326b96f22f63fb99dfc1@google.com>
Run-TryBot: Robert Griesemer <a6752097faebf1f02d80107d77a9be009089afe3@golang.org>

josharian/go,suncycheng/go,codestation/go,vanloswang/go,4ad/go,ganboing/go-esx,linux-on-ibm-z/go,Endika/go,vanloswang/go,momchil-velikov/go,cyberroadie/go,vanloswang/go,goodlang/good,CAFxX/go,Samurais/go,cloudflare/go,suncycheng/go,theif519/go,nawawi/go,mwhudson/go,akutz/go,vanloswang/go,Samurais/go,goodlang/good,4ad/go,Endika/go,polyverse-security/go,sndnvaps/go,polyverse-security/go,sndnvaps/go,ImJasonH/go,sndnvaps/go,polyverse-security/go,miolini/go,miolini/go,cloudflare/go,binarycrusader/go,vsekhar/elastic-go,miolini/go,vsekhar/elastic-go,miolini/go,golang/go,linux-on-ibm-z/go,miolini/go,mwhudson/go,ImJasonH/go,golang/go,codestation/go,josharian/go,sndnvaps/go,theif519/go,derekmarcotte/go,akutz/go,mwhudson/go,mwhudson/go,christopher-henderson/Go,mwhudson/go,momchil-velikov/go,momchil-velikov/go,binarycrusader/go,binarycrusader/go,ganboing/go-esx,mwhudson/go,4ad/go,Endika/go,momchil-velikov/go,linux-on-ibm-z/go,derekmarcotte/go,Endika/go,vsekhar/elastic-go,suncycheng/go,CAFxX/go,goodlang/good,cyberroadie/go,codestation/go,ImJasonH/go,suncycheng/go,4ad/go,vsekhar/elastic-go,derekmarcotte/go,josharian/go,miolini/go,golang/go,goodlang/good,CAFxX/go,codestation/go,codestation/go,ganboing/go-esx,binarycrusader/go,ganboing/go-esx,suncycheng/go,4ad/go,vsekhar/elastic-go,binarycrusader/go,goodlang/good,derekmarcotte/go,akutz/go,vanloswang/go,cyberroadie/go,akutz/go,akutz/go,4ad/go,polyverse-security/go,josharian/go,Endika/go,cloudflare/go,ImJasonH/go,ImJasonH/go,CAFxX/go,binarycrusader/go,sndnvaps/go,CAFxX/go,codestation/go,Cofyc/go,momchil-velikov/go,cyberroadie/go,vsekhar/elastic-go,vsekhar/elastic-go,Cofyc/go,linux-on-ibm-z/go,CAFxX/go,linux-on-ibm-z/go,polyverse-security/go,Samurais/go,cyberroadie/go,theif519/go,momchil-velikov/go,mwhudson/go,ganboing/go-esx,Cofyc/go,cloudflare/go,momchil-velikov/go,binarycrusader/go,codestation/go,nawawi/go,suncycheng/go,sndnvaps/go,suncycheng/go,josharian/go,codestation/go,Samurais/go,Endika/go,nawawi/go,golang/go,ImJasonH/go,sndnvaps/go,derekmarcotte/go,ganboing/go-esx,CAFxX/go,Cofyc/go,cyberroadie/go,polyverse-security/go,Samurais/go,mwhudson/go,goodlang/good,cloudflare/go,golang/go,cloudflare/go,Cofyc/go,nawawi/go,momchil-velikov/go,Samurais/go,Endika/go,vanloswang/go,theif519/go,Cofyc/go,polyverse-security/go,josharian/go,suncycheng/go,golang/go,akutz/go,akutz/go,golang/go,4ad/go,ImJasonH/go,vsekhar/elastic-go,vanloswang/go,derekmarcotte/go,linux-on-ibm-z/go,akutz/go,ganboing/go-esx,derekmarcotte/go,theif519/go,linux-on-ibm-z/go,linux-on-ibm-z/go,Samurais/go,cloudflare/go,ganboing/go-esx,nawawi/go,ImJasonH/go,Endika/go,cyberroadie/go,goodlang/good,vanloswang/go,nawawi/go,miolini/go,josharian/go,theif519/go,4ad/go,theif519/go,Cofyc/go,goodlang/good,Cofyc/go,cloudflare/go,nawawi/go,miolini/go,derekmarcotte/go,golang/go,josharian/go,cyberroadie/go,sndnvaps/go,Samurais/go,polyverse-security/go,theif519/go,nawawi/go,CAFxX/go,binarycrusader/go