delete tool/instruction.rb (2nd try)

Previous commit changed insns.def format. Now is the time for its
generators. In doing so I chose to modernize the system, not just
patch.  My attempt includes

- extensive use of Onigumo regular expressions
- split from one big file (instruction.rb) into separated MVC
- partial view

Also, let me take this opportunity to kill old unused features
such as

- stack caching
- minsns / yasmdata which are never seriously used
- yarvarch document generation (moved to doc/)
- vast majority of unused arguments to insns2vm.rb

This commit generates VM source codes that cleanly compile, and
the generated binary passes tests.  At least for me.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61784 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

tool/ruby_vm/views/_attributes.erb

@@ -0,0 +1,34 @@
+%# -*- mode:c; style:ruby; coding: utf-8; indent-tabs-mode: nil -*-
+%# Copyright (c) 2017 Urabe, Shyouhei.  All rights reserved.
+%#
+%# This file is a part of  the programming language Ruby.  Permission is hereby
+%# granted, to either  redistribute and/or modify this file,  provided that the
+%# conditions mentioned  in the  file COPYING  are met.   Consult the  file for
+%#
+typedef long OFFSET;
+typedef unsigned long lindex_t;
+typedef VALUE GENTRY;
+typedef rb_iseq_t *ISEQ;
+
+#define CALL_ATTRIBUTE(name, insn, ...) attr_ ## name ## _ ## insn(__VA_ARGS__)
+
+% attrs = RubyVM::Instructions.map(&:attributes).flatten
+%
+% attrs.each do |a|
+PUREFUNC(MAYBE_UNUSED(static <%= a.declaration %>));
+% end
+%
+% attrs.each do |a|
+
+/* <%= a.pretty_name %> */
+<%= a.definition %>
+{
+% str = render_c_expr a.expr
+% case str when /\A#/ then
+    return
+<%= str -%>
+% else
+    return <%= str -%>
+% end
+}
+% end