build: remove Make.pkg, Make.tool

Consequently, remove many package Makefiles,
and shorten the few that remain.

gomake becomes 'go tool make'.

Turn off test phases of run.bash that do not work,
flagged with $BROKEN.  Future CLs will restore these,
but this seemed like a big enough CL already.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5601057

Makefile

@@ -1,39 +0,0 @@
-# Copyright 2009 The Go Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style
-# license that can be found in the LICENSE file.
-
-include ../../../Make.inc
-
-TARG=crypto/tls
-GOFILES=\
-	alert.go\
-	cipher_suites.go\
-	common.go\
-	conn.go\
-	handshake_client.go\
-	handshake_messages.go\
-	handshake_server.go\
-	key_agreement.go\
-	prf.go\
-	tls.go\
-
-ifeq ($(CGO_ENABLED),1)
-CGOFILES_darwin=\
-	root_darwin.go
-else
-GOFILES_darwin+=root_stub.go
-endif
-
-GOFILES_freebsd+=root_unix.go
-GOFILES_linux+=root_unix.go
-GOFILES_netbsd+=root_unix.go
-GOFILES_openbsd+=root_unix.go
-GOFILES_plan9+=root_stub.go
-GOFILES_windows+=root_windows.go
-
-GOFILES+=$(GOFILES_$(GOOS))
-ifneq ($(CGOFILES_$(GOOS)),)
-CGOFILES+=$(CGOFILES_$(GOOS))
-endif
-
-include ../../../Make.pkg