* gnu/packages/golang.scm (go-1.4): Use the bootstrap branch that is
still supported upstream.
[version]: Update to 1.4-bootstrap-20171003.
[arguments]: Remove obsolete fix for timezone test which is now included
upstream. Don't manually disable cgo because it is disabled by default.
Manually enable test suite because future releases will disable tests by
default.
Signed-off-by: Leo Famulari <leo@famulari.name>
521d736ae9