Fall back to GOPATH if GOROOT is not writable.
Fall back to GOPATH if GOROOT is not writable.

gopherjs/gopherjs,albrow/gopherjs,gopherjs/gopherjs,jeremyschlatter/gopherjs,Yanjing123/gopherjs,Yanjing123/gopherjs,bpowers/gopherjs,Yanjing123/gopherjs,nmfzone/gopherjs,nmfzone/gopherjs,bpowers/gopherjs,Archs/gopherjs,ebroder/gopherjs,govlas/gopherjs,jargv/gopherjs,roth1002/gopherjs,jargv/gopherjs,govlas/gopherjs,Archs/gopherjs,albrow/gopherjs,gopherjs/gopherjs,rasata/gopherjs,roth1002/gopherjs,ebroder/gopherjs,flimzy/gopherjs,rasata/gopherjs,albrow/gopherjs,gopherjs/gopherjs,flimzy/gopherjs,rasata/gopherjs,govlas/gopherjs,Archs/gopherjs,jeremyschlatter/gopherjs,jargv/gopherjs,flimzy/gopherjs,roth1002/gopherjs,bpowers/gopherjs,jeremyschlatter/gopherjs,nmfzone/gopherjs,gopherjs/gopherjs,ebroder/gopherjs