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/types_dragonfly.go b/unix/types_dragonfly.go
index fb7fd1b..f3c971d 100644
--- a/unix/types_dragonfly.go
+++ b/unix/types_dragonfly.go
@@ -11,7 +11,7 @@
// +godefs map struct_in_addr [4]byte /* in_addr */
// +godefs map struct_in6_addr [16]byte /* in6_addr */
-package syscall
+package unix
/*
#define KERNEL
