C driver support for * and +
C driver support for * and +

This adds driver support for the * and + operators. This requires some
extra trouble and an Array allocation to ensure operator values are
grouped together. The result however is that operators are processed as
being left-associative, opposed to recursion which is right-associative.

telekomatrix/ruby-ll,YorickPeterse/ruby-ll,YorickPeterse/ruby-ll,telekomatrix/ruby-ll,telekomatrix/ruby-ll,YorickPeterse/ruby-ll,telekomatrix/ruby-ll,YorickPeterse/ruby-ll