The patch provided by drbrain (Eric Hodel). [ruby-core:55896]
  [Backport #8617]

* test/rubygems:  Tests for the above.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@42117 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	* lib/rubygems/config_file.rb:  Lazily load .gem/credentials to only
	  check permissions when necessary.  RubyGems bug #465

	* test/rubygems/test_gem_config_file.rb:  Test for the above.

	* test/rubygems/test_gem_commands_push_command.rb:  Remove duplicated
	  test.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@40731 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

  `gem push --host`
* lib/rubygems/gemcutter_utilities.rb:  ditto.
* test/rubygems/test_gem_commands_push_command.rb:  Test for the above.
* test/rubygems/test_gem_gemcutter_utilities.rb:  ditto.

* lib/rubygems/config_file.rb:  Abort if the `gem push` credentials
  file has insecure permissions.
* test/rubygems/test_gem_config_file.rb:  Test for the above.

* lib/rubygems/ext/builder.rb:  Do not look for Gemfile, Isolate, etc.
  while building gem extensions.

* lib/rubygems/package.rb:  Unset spec and files list if a gem's
  signatures cannot be verified.
* test/rubygems/test_gem_package.rb:  Test for the above.

* lib/rubygems/specification.rb:  Reduce use of eval.
* lib/rubygems/test_case.rb:  ditto.

* test/rubygems/test_gem_specification.rb:  Test setting
  specification_version for legacy gems.  Dup Gem.ruby before
  untainting in case it's frozen.

* lib/rubygems.rb:  Reduce use of eval.  Only read files when looking
  for Gemfile, Isolate, etc.
* test/rubygems/test_gem.rb:  Test for the above.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39055 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	  options to clean up after failed uninstallation.
	* test/rubygems/test_gem_commands_check_command.rb:  Test for above.

	* lib/rubygems/commands/push_command.rb:  Allow pushes from RubyGems
	  2.0.0.preview3

	* lib/rubygems/commands/update_command.rb:  Use Gem.ruby_version

	* lib/rubygems/dependency.rb:  Update style.

	* lib/rubygems/installer.rb:  Ensure installed gem specifications will
	  be useable.  Refactor.
	* test/rubygems/test_gem_installer.rb:  ditto.

	* lib/rubygems/validator.rb:  Fixed bug with unreadable files.

	* lib/rubygems.rb:  Fixed broken methods.
	* test/rubygems/test_gem.rb:  Test for above.

	* test/rubygems/test_gem_commands_push_command.rb:  Fixed overridden
	  Gem.latest_rubygems_version


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38564 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* test/rubygems*:  ditto.

* common.mk (prelude):  Updated for RubyGems 2.0 source rearrangement.

* tool/change_maker.rb:  Allow invalid UTF-8 characters in source
  files.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37976 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32693 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@31885 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@30996 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@30717 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@30599 b2dd03c8-39d4-4d8f-98ff-823fe69b080e