Only attempt to build extensions for newly-installed gems. This
prevents compilation attempts at gem activation time for gems that
already have extensions built.
Fix crash in the dependency resolver for dependencies that cannot be
resolved.
* test/rubygems: ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43368 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Fix test failure on vc10-x64 Server on rubyci.org due to attempting
to File.chmod where it is not supported.
Continuing work on improved gem dependencies file (Gemfile) support.
* test: ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43347 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Fixed installing platform gems
Restored concurrent requires
Fixed installing gems with extensions with --install-dir
Fixed `gem fetch -v` to install the latest version
Fixed installing gems with "./" in their files entries
* test/rubygems/test_gem_package.rb: Tests for the above.
* NEWS: Updated for RubyGems 2.1.3
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42927 b2dd03c8-39d4-4d8f-98ff-823fe69b080e