It is unclear why this was implemented, I assume
it was for performance back in 2006.
However today, this compression defeats bytecode caching
entirely and end up being counter productive.
https://github.com/ruby/racc/commit/ae3703c1d0
Racc calls `Array#sort!` to build a state transition table. As
`Array#sort!` is not a stable sort, the output may differ depending upon
the environment.
This changeset makes the sort stable manually, and updates all
expectation files.