cmd/go: change ar argument to rc
cmd/go: change ar argument to rc

Put 'r' first because that is the command, and 'c' is the modifier.
Keep 'c' because it means to not warn when creating an archive.
Drop 'u' because it is unnecessary and fails on Arch Linux.

No test because this is only for gccgo (I tested it manually).

Fixes #12310.

Change-Id: Id740257fb1c347dfaa60f7d613af2897dae2c059
Reviewed-on: https://go-review.googlesource.com/16664
Run-TryBot: Ian Lance Taylor <87e9c6d529889242b7e184afb632328636553ab4@golang.org>
TryBot-Result: Gobot Gobot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>
Reviewed-by: David Crawshaw <a2f0bf29257797dd66800b4fbb9945c3e216c004@golang.org>

roth1002/go,golang/go,vsekhar/elastic-go,kim-racktop/go,josharian/go,momchil-velikov/go,goodlang/good,fjballest/golang,roth1002/go,Cofyc/go,Samurais/go,CAFxX/go,cloudflare/go,cyberroadie/go,sndnvaps/go,suncycheng/go,ImJasonH/go,momchil-velikov/go,linux-on-ibm-z/go,ganboing/go-esx,linux-on-ibm-z/go,binarycrusader/go,suncycheng/go,josharian/go,odeke-em/go,roth1002/go,goodlang/good,linux-on-ibm-z/go,kim-racktop/go,golang/go,Jordanzuo/go,miolini/go,cloudflare/go,ganboing/go-esx,Endika/go,cloudflare/go,Cofyc/go,Samurais/go,kim-racktop/go,deft-code/go,binarycrusader/go,nawawi/go,odeke-em/go,4ad/go,kim-racktop/go,binarycrusader/go,mwhudson/go,goodlang/good,derekmarcotte/go,cyberroadie/go,suncycheng/go,odeke-em/go,rachtsingh/gogojuice,deft-code/go,4ad/go,derekmarcotte/go,akutz/go,deft-code/go,ImJasonH/go,Samurais/go,rachtsingh/gogojuice,Jordanzuo/go,codestation/go,derekmarcotte/go,rachtsingh/gogojuice,suncycheng/go,akutz/go,rachtsingh/gogojuice,roth1002/go,theif519/go,josharian/go,Jordanzuo/go,theif519/go,codestation/go,binarycrusader/go,momchil-velikov/go,Cofyc/go,linux-on-ibm-z/go,linux-on-ibm-z/go,ganboing/go-esx,josharian/go,nawawi/go,kim-racktop/go,4ad/go,Samurais/go,codestation/go,codestation/go,cloudflare/go,deft-code/go,vanloswang/go,mwhudson/go,ImJasonH/go,mwhudson/go,mwhudson/go,mwhudson/go,4ad/go,fjballest/golang,golang/go,golang/go,theif519/go,ganboing/go-esx,suncycheng/go,linux-on-ibm-z/go,Jordanzuo/go,odeke-em/go,CAFxX/go,derekmarcotte/go,linux-on-ibm-z/go,Samurais/go,Samurais/go,sndnvaps/go,deft-code/go,cyberroadie/go,momchil-velikov/go,akutz/go,Cofyc/go,momchil-velikov/go,fjballest/golang,mwhudson/go,miolini/go,rachtsingh/gogojuice,codestation/go,polyverse-security/go,goodlang/good,linux-on-ibm-z/go,christopher-henderson/Go,derekmarcotte/go,miolini/go,binarycrusader/go,sndnvaps/go,roth1002/go,odeke-em/go,nawawi/go,deft-code/go,cloudflare/go,binarycrusader/go,Jordanzuo/go,miolini/go,josharian/go,goodlang/good,rachtsingh/gogojuice,fjballest/golang,vsekhar/elastic-go,codestation/go,vsekhar/elastic-go,ganboing/go-esx,miolini/go,josharian/go,mwhudson/go,cyberroadie/go,miolini/go,theif519/go,rachtsingh/gogojuice,roth1002/go,suncycheng/go,ImJasonH/go,cyberroadie/go,CAFxX/go,fjballest/golang,Cofyc/go,goodlang/good,ganboing/go-esx,vsekhar/elastic-go,sndnvaps/go,Cofyc/go,sndnvaps/go,Jordanzuo/go,theif519/go,codestation/go,Jordanzuo/go,ganboing/go-esx,CAFxX/go,CAFxX/go,roth1002/go,akutz/go,nawawi/go,sndnvaps/go,ImJasonH/go,deft-code/go,Samurais/go,miolini/go,4ad/go,binarycrusader/go,odeke-em/go,4ad/go,akutz/go,momchil-velikov/go,Cofyc/go,vsekhar/elastic-go,cloudflare/go,nawawi/go,odeke-em/go,theif519/go,CAFxX/go,Jordanzuo/go,vanloswang/go,vanloswang/go,polyverse-security/go,CAFxX/go,josharian/go,golang/go,ganboing/go-esx,golang/go,theif519/go,cyberroadie/go,miolini/go,cyberroadie/go,fjballest/golang,fjballest/golang,sndnvaps/go,momchil-velikov/go,ImJasonH/go,ImJasonH/go,codestation/go,cloudflare/go,vsekhar/elastic-go,Endika/go,golang/go,Cofyc/go,ImJasonH/go,nawawi/go,polyverse-security/go,kim-racktop/go,fjballest/golang,derekmarcotte/go,Endika/go,Endika/go,binarycrusader/go,suncycheng/go,polyverse-security/go,polyverse-security/go,polyverse-security/go,kim-racktop/go,sndnvaps/go,polyverse-security/go,goodlang/good,cloudflare/go,Endika/go,Endika/go,rachtsingh/gogojuice,nawawi/go,vanloswang/go,Endika/go,derekmarcotte/go,Samurais/go,akutz/go,vanloswang/go,deft-code/go,vsekhar/elastic-go,suncycheng/go,akutz/go,4ad/go,derekmarcotte/go,golang/go,josharian/go,nawawi/go,odeke-em/go,CAFxX/go,Endika/go,vsekhar/elastic-go,4ad/go,momchil-velikov/go,polyverse-security/go,goodlang/good,kim-racktop/go,vanloswang/go,cyberroadie/go,vanloswang/go,vanloswang/go,akutz/go,roth1002/go,theif519/go,mwhudson/go