runtime: combine gcResetGState and gcResetMarkState
runtime: combine gcResetGState and gcResetMarkState

These functions are always called together and perform logically
related state resets, so combine them in to just gcResetMarkState.

Fixes #11427.

Change-Id: I06c17ef65f66186494887a767b3993126955b5fe
Reviewed-on: https://go-review.googlesource.com/16041
Reviewed-by: Rick Hudson <838bd060584c511f21c75c69ea04b7b120d86af0@golang.org>

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