Embedded parser uses load racc/info

[jwillemsen]

When using an embedded parser the generated rb uses require racc/info to get ::Racc::VERSION. As far as I understand it, when using an embedded parser I shouldn't need racc itself anymore, so why include racc/info?

To reproduce run in the sample directory racc -o calc.rb -E calc.y and check the generated calc.rb, see line 23 for the generated require

[hsbt]

Fixed at #218