make-snapshot: RUBY_VERSION

* tool/make-snapshot (package): override RUBY_VERSION to proceed
  with different version ruby.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50086 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

tool/make-snapshot

@@ -245,6 +245,8 @@ def package(vcs, rev, destdir, tmp = nil)
       f.puts "CROSS_COMPILING=true"
       f.puts "Object.__send__(:remove_const, :RUBY_PLATFORM)"
       f.puts "RUBY_PLATFORM='none'"
+      f.puts "Object.__send__(:remove_const, :RUBY_VERSION)"
+      f.puts "RUBY_VERSION='#{version}'"
     end
     unless File.exist?("configure")
       print "creating configure..."