Start using MODRUBY_REGRESS with ruby, rspec2, and testrb entries.
Switch away from manual do_regress targets where possible. Add
some patches to make regress tests run for some ports.
Discount is an implementation of John Gruber's Markdown markup language
in C. It implements all of the language described in the markdown syntax
document and passes the Markdown 1.0 test suite. rdiscount is a ruby C
extension that wraps Discount.
