make-snapshot: unused variables

* tool/make-snapshot (package): remove variables no longer used.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45936 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
make-snapshot: -package option

* tool/make-snapshot (package): add -package option to select
  packages to be made.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45937 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
make-snapshot: -digests option

* tool/make-snapshot (package): add -digests option to select
  digest algorithms to be shown.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45938 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2014-05-14

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45939 b2dd03c8-39d4-4d8f-98ff-823fe69b080e