ffi/ffi — pull request #193 by joliss (2012-02-15 17:51:31+00:00)
Title: Use RbConfig instead of deprecated Config

RbConfig works on Ruby >=1.8.5 (i.e. everywhere), and Config is deprecated
as of Ruby 1.9.3.

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I couldn't figure out how to compile and test. I only did `find -type f | xargs perl -pi -e 's/RbConfig/Config/g'`, so I'm not expecting any issues, but could you please run the test suite before pushing this, just to be sure?