syscall: sort Makefile, mkall.sh and mkerrors.sh entries

R=golang-dev, jsing
CC=golang-dev
https://golang.org/cl/5495062
diff --git a/src/pkg/syscall/Makefile b/src/pkg/syscall/Makefile
index f6494ea..9cf6813 100644
--- a/src/pkg/syscall/Makefile
+++ b/src/pkg/syscall/Makefile
@@ -16,16 +16,6 @@
 	zsysnum_$(GOOS)_$(GOARCH).go\
 	ztypes_$(GOOS)_$(GOARCH).go\
 
-GOFILES_freebsd=\
-	bpf_bsd.go\
-	env_unix.go\
-	exec_unix.go\
-	route_bsd.go\
-	route_freebsd.go\
-	sockcmsg_unix.go\
-	syscall_bsd.go\
-	syscall_unix.go\
-
 GOFILES_darwin=\
 	bpf_bsd.go\
 	env_unix.go\
@@ -36,6 +26,16 @@
 	syscall_bsd.go\
 	syscall_unix.go\
 
+GOFILES_freebsd=\
+	bpf_bsd.go\
+	env_unix.go\
+	exec_unix.go\
+	route_bsd.go\
+	route_freebsd.go\
+	sockcmsg_unix.go\
+	syscall_bsd.go\
+	syscall_unix.go\
+
 GOFILES_linux=\
 	env_unix.go\
 	exec_unix.go\
@@ -67,6 +67,10 @@
 	syscall_unix.go\
 	zsysctl_openbsd.go\
 
+GOFILES_plan9=\
+	env_plan9.go\
+	exec_plan9.go\
+
 GOFILES_windows=\
 	env_windows.go\
 	exec_windows.go\
@@ -74,10 +78,6 @@
 	zerrors_windows.go\
 	ztypes_windows.go\
 
-GOFILES_plan9=\
-	env_plan9.go\
-	exec_plan9.go\
-
 OFILES=\
 	asm_$(GOOS)_$(GOARCH).$O\
 
diff --git a/src/pkg/syscall/mkall.sh b/src/pkg/syscall/mkall.sh
index d89fd43..7bedfd0 100755
--- a/src/pkg/syscall/mkall.sh
+++ b/src/pkg/syscall/mkall.sh
@@ -109,17 +109,6 @@
 	echo 'undefined $GOOS_$GOARCH:' "$GOOSARCH" 1>&2
 	exit 1
 	;;
-freebsd_386)
-	mkerrors="$mkerrors -m32"
-	mksyscall="./mksyscall.pl -l32"
-	mksysnum="curl -s 'http://svn.freebsd.org/base/head/sys/kern/syscalls.master' | ./mksysnum_freebsd.pl"
-	mktypes="GOARCH=$GOARCH cgo -godefs"
-	;;
-freebsd_amd64)
-	mkerrors="$mkerrors -m64"
-	mksysnum="curl -s 'http://svn.freebsd.org/base/head/sys/kern/syscalls.master' | ./mksysnum_freebsd.pl"
-	mktypes="GOARCH=$GOARCH cgo -godefs"
-	;;
 darwin_386)
 	mkerrors="$mkerrors -m32"
 	mksyscall="./mksyscall.pl -l32"
@@ -131,6 +120,17 @@
 	mksysnum="./mksysnum_darwin.pl /usr/include/sys/syscall.h"
 	mktypes="GOARCH=$GOARCH cgo -godefs"
 	;;
+freebsd_386)
+	mkerrors="$mkerrors -m32"
+	mksyscall="./mksyscall.pl -l32"
+	mksysnum="curl -s 'http://svn.freebsd.org/base/head/sys/kern/syscalls.master' | ./mksysnum_freebsd.pl"
+	mktypes="GOARCH=$GOARCH cgo -godefs"
+	;;
+freebsd_amd64)
+	mkerrors="$mkerrors -m64"
+	mksysnum="curl -s 'http://svn.freebsd.org/base/head/sys/kern/syscalls.master' | ./mksysnum_freebsd.pl"
+	mktypes="GOARCH=$GOARCH cgo -godefs"
+	;;
 linux_386)
 	mkerrors="$mkerrors -m32"
 	mksyscall="./mksyscall.pl -l32"
@@ -148,26 +148,6 @@
 	mksysnum="./mksysnum_linux.pl /usr/include/asm/unistd.h"
 	mktypes="GOARCH=$GOARCH cgo -godefs"
 	;;
-windows_386)
-	mksyscall="./mksyscall_windows.pl -l32"
-	mksysnum=
-	mktypes=
-	mkerrors="./mkerrors_windows.sh -m32"
-	zerrors="zerrors_windows.go"
-	;;
-windows_amd64)
-	mksyscall="./mksyscall_windows.pl"
-	mksysnum=
-	mktypes=
-	mkerrors="./mkerrors_windows.sh -m32"
-	zerrors="zerrors_windows.go"
-	;;
-plan9_386)
-	mkerrors=
-	mksyscall="./mksyscall.pl -l32 -plan9"
-	mksysnum="./mksysnum_plan9.sh /n/sources/plan9/sys/src/libc/9syscall/sys.h"
-	mktypes="XXX"
-	;;
 openbsd_386)
 	mkerrors="$mkerrors -m32"
 	mksyscall="./mksyscall.pl -l32 -openbsd"
@@ -184,6 +164,26 @@
 	mksysnum="curl -s 'http://www.openbsd.org/cgi-bin/cvsweb/~checkout~/src/sys/kern/syscalls.master' | ./mksysnum_openbsd.pl"
 	mktypes="GOARCH=$GOARCH cgo -godefs"
 	;;
+plan9_386)
+	mkerrors=
+	mksyscall="./mksyscall.pl -l32 -plan9"
+	mksysnum="./mksysnum_plan9.sh /n/sources/plan9/sys/src/libc/9syscall/sys.h"
+	mktypes="XXX"
+	;;
+windows_386)
+	mksyscall="./mksyscall_windows.pl -l32"
+	mksysnum=
+	mktypes=
+	mkerrors="./mkerrors_windows.sh -m32"
+	zerrors="zerrors_windows.go"
+	;;
+windows_amd64)
+	mksyscall="./mksyscall_windows.pl"
+	mksysnum=
+	mktypes=
+	mkerrors="./mkerrors_windows.sh -m32"
+	zerrors="zerrors_windows.go"
+	;;
 *)
 	echo 'unrecognized $GOOS_$GOARCH: ' "$GOOSARCH" 1>&2
 	exit 1
diff --git a/src/pkg/syscall/mkerrors.sh b/src/pkg/syscall/mkerrors.sh
index ff9ece9..740dd87 100755
--- a/src/pkg/syscall/mkerrors.sh
+++ b/src/pkg/syscall/mkerrors.sh
@@ -15,35 +15,6 @@
 
 uname=$(uname)
 
-includes_Linux='
-#define _LARGEFILE_SOURCE
-#define _LARGEFILE64_SOURCE
-#define _FILE_OFFSET_BITS 64
-#define _GNU_SOURCE
-
-#include <bits/sockaddr.h>
-#include <sys/epoll.h>
-#include <sys/inotify.h>
-#include <sys/ioctl.h>
-#include <sys/mman.h>
-#include <sys/mount.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <linux/if_addr.h>
-#include <linux/if_ether.h>
-#include <linux/if_tun.h>
-#include <linux/filter.h>
-#include <linux/netlink.h>
-#include <linux/reboot.h>
-#include <linux/rtnetlink.h>
-#include <linux/ptrace.h>
-#include <linux/wait.h>
-#include <net/if.h>
-#include <net/if_arp.h>
-#include <net/route.h>
-#include <netpacket/packet.h>
-'
-
 includes_Darwin='
 #define _DARWIN_C_SOURCE
 #define KERNEL
@@ -84,6 +55,35 @@
 #include <netinet/ip_mroute.h>
 '
 
+includes_Linux='
+#define _LARGEFILE_SOURCE
+#define _LARGEFILE64_SOURCE
+#define _FILE_OFFSET_BITS 64
+#define _GNU_SOURCE
+
+#include <bits/sockaddr.h>
+#include <sys/epoll.h>
+#include <sys/inotify.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <linux/if_addr.h>
+#include <linux/if_ether.h>
+#include <linux/if_tun.h>
+#include <linux/filter.h>
+#include <linux/netlink.h>
+#include <linux/reboot.h>
+#include <linux/rtnetlink.h>
+#include <linux/ptrace.h>
+#include <linux/wait.h>
+#include <net/if.h>
+#include <net/if_arp.h>
+#include <net/route.h>
+#include <netpacket/packet.h>
+'
+
 includes_OpenBSD='
 #include <sys/types.h>
 #include <sys/param.h>