Autoclean on unsuccessful installation
fix: Ensure cleaned directory did not exist
Merge pull request #275 from sheerun/failure-cleanup

Autoclean on unsuccessful installation
Added a definition for 2.0.0-p0
switched http
Merge pull request #299 from hsbt/add-definition-200p0

Added a definition for 2.0.0-p0
ruby-build 20130224
1.9.3 builds with performance patches.
Build for 1.9.3-p385-perf.
Build for 1.9.3-p392-perf.