Reads and loads checksums.yaml.gz from the tar file gem
# File lib/rubygems/package.rb, line 438
def read_checksums gem
Gem.load_yaml
@checksums = gem.seek 'checksums.yaml.gz' do |entry|
Zlib::GzipReader.wrap entry do |gz_io|
YAML.load gz_io.read
end
end
end
