Add a warn about a misspelled RUBYSPECS ENV var
Add a warn about a misspelled RUBYSPECS ENV var

And avoid wasting time the next time!

kachick/opal,Mogztter/opal,kachick/opal,kachick/opal,opal/opal,kachick/opal,opal/opal,opal/opal,opal/opal,Mogztter/opal,Mogztter/opal,Mogztter/opal