Repeatability of RubySpec about spec

[eregon]

The whole suite now runs with -R2, and it's tested in Travis to make sure we don't regress!

[mgaudet]

Awesome. I'll look into providing some (may not be shortly) -- but I wanted to have a philosophical go-ahead that it was worth chasing :D

Thanks!

[eregon]

I fixed the cases in language, so mspec -R2 language works now 😃

[eregon]

It seems a good part of the specs pass, but indeed some exhibit bad behavior.
(core/array seems to work just fine for example)
Specs should be idempotent, and therefore the ones that are not should be fixed.

As usual, it's hard to keep all configurations running as it would mean explosion of configurations.

Some autoload specs seems to hang, if I exclude them I get 140 failures and 27 errors, which is a lot but many seems to be similar:

mspec -R 2 -E autoload

I'll have a look at some of these specs. Of course, any patch to help is welcome 😃

[eregon]

I fixed library and optional as well, so only core remains with 33 failures with -R2.

[mgaudet]

O.o Thanks so much!

I haven't even looked at this yet. 😮