fail man tasks without ronn
re-include man pages in built gem
2.0 is here and we should test on it
ruby 2 needs rspec 2.13, apparently
make 'install' and 'build' tasks depend on 'build'

This patch attempts to fix issue #2121 in Bundler.
trace fetch errors, don't rescue twice needlessly
more authentic SSL cert failure for testing
useless begin
re-handle rubygems requiring openssl
delay rubygems/security so we can catch LoadErrors