all: make copyright headers consistent with one space after period

2016-03-01T23:34:33Z

This is a subset of https://golang.org/cl/20022 with only the copyright header lines, so the next CL will be smaller and more reviewable. Go policy has been single space after periods in comments for some time. The copyright header template at: https://golang.org/doc/contribute.html#copyright also uses a single space. Make them all consistent. Change-Id: Icc26c6b8495c3820da6b171ca96a74701b4a01b0 Reviewed-on: https://go-review.googlesource.com/20111 Run-TryBot: Brad Fitzpatrick Reviewed-by: Ian Lance Taylor Reviewed-by: Matthew Dempsky TryBot-Result: Gobot Gobot

cmd/go: prohibit C sources files unless using cgo

2014-09-24T19:10:38Z

Those C files would have been compiled with 6c. It's close to impossible to use C correctly anymore, and the C compilers are going away eventually. Make them unavailable now. go1.4.txt change in CL 145890046 LGTM=iant R=iant CC=golang-codereviews, r https://golang.org/cl/149720043

go/src/runtime/debug/debug.s, branch json-isValidNumber

all: make copyright headers consistent with one space after period

cmd/go: prohibit C sources files unless using cgo