link the latest ruby-build.$SEED.log and ruby-build.$SEED/ to ruby-build.latest.log and ruby-build.latest/ respectively
Merge pull request #535 from Fleurer/patch/1

link the latest log to /tmp/ruby-build.latest.log
released 2.1.2
Merge pull request #566 from sstephenson/ruby-2-1-2

Ruby 2.1.2 is released!
ruby-build 20140509
added definition of 2.0.0-p481
Merge pull request #567 from sstephenson/2-0-0-p481

Added definition of 2.0.0-p481
Revert "Merge pull request #535 from Fleurer/patch/1"

This reverts commit d45f145197612f2b012d7dc3522949e719568371, reversing
changes made to 13de51105bcf927cbd01d05b69c695ddd3bfd1b9.
1.9.3 builds with performance patches.
Build for 1.9.3-p385-perf.
Build for 1.9.3-p392-perf.
Build for 1.9.3-p429-perf.
Build for 1.9.3-p448-perf.
Build for 2.1.1-perf.
Build for 1.9.3-p484-perf.
Build for 1.9.3-p545-perf.
Updates for 2.1.1-perf.
Build for 2.1.2-perf.