go.sys: update package names
Semi-automatic migration from package syscall to package {plan9,windows,unix}.
No builds attempted yet, but this gets a lot of noise behind us so subsequent
CLs will be more concise and easier to follow.
Subsequent CLs will have semantic content.
LGTM=rsc
R=golang-codereviews, rsc
CC=golang-codereviews
https://golang.org/cl/121520043
diff --git a/unix/zsyscall_darwin_386.go b/unix/zsyscall_darwin_386.go
index a6a176b..3dc16c0 100644
--- a/unix/zsyscall_darwin_386.go
+++ b/unix/zsyscall_darwin_386.go
@@ -1,7 +1,7 @@
-// mksyscall.pl -l32 syscall_bsd.go syscall_darwin.go syscall_darwin_386.go
+// mkunix.pl -l32 syscall_bsd.go syscall_darwin.go syscall_darwin_386.go
// MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
-package syscall
+package unix
import "unsafe"
