LGTM=r, bradfitz
R=r, bradfitz
CC=golang-codereviews
https://codereview.appspot.com/127470043

preparing for the syscall package freeze.

??? original CL description
syscall: regenerate z-files for darwin

Updates z-files from 10.7 kernel-based to 10.9 kernel-based.

LGTM=iant
R=golang-codereviews, bradfitz, iant
CC=golang-codereviews
https://codereview.appspot.com/102610045
???

LGTM=r
R=r
CC=golang-codereviews
https://codereview.appspot.com/114530044

Updates z-files from 10.7 kernel-based to 10.9 kernel-based.

LGTM=iant
R=golang-codereviews, bradfitz, iant
CC=golang-codereviews
https://codereview.appspot.com/102610045

Update Issue 8112

LGTM=adg
R=adg
CC=golang-codereviews
https://codereview.appspot.com/104790045

Update issue 8112

Hide one-pass regexp API.

This means moving the code from regexp/syntax to regexp,
but it avoids being locked into the specific API chosen for
the implementation.

It also removes a slice field from the syntax.Inst, which
should avoid bloating the memory footprint of a non-one-pass
regexp unnecessarily.

LGTM=r
R=golang-codereviews, r
CC=golang-codereviews, iant
https://codereview.appspot.com/98610046

LGTM=rsc
R=golang-codereviews, rsc
CC=adg, golang-codereviews
https://codereview.appspot.com/99530044

LGTM=bradfitz
R=golang-codereviews, bradfitz
CC=golang-codereviews
https://codereview.appspot.com/95490043

This CL restores dropped constants not supported in OpenBSD 5.5
and tris to keep the promise of API compatibility.

Update issue 7049

LGTM=jsing, bradfitz
R=rsc, jsing, bradfitz
CC=golang-codereviews
https://codereview.appspot.com/94950043

LGTM=bradfitz
R=golang-codereviews, gobot, bradfitz
CC=golang-codereviews
https://codereview.appspot.com/81890044

LGTM=bradfitz
R=golang-codereviews, bradfitz
CC=golang-codereviews
https://codereview.appspot.com/71950043