Fixed "gopherjs install" for library packages.
Fixed "gopherjs install" for library packages.

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