Substitute require for require_relative

[tas50]

require_relative is significantly faster and should be used when available. See @lamont-granquist for the full story.

Signed-off-by: Tim Smith [email protected]

[chef-expeditor]

Hello tas50! Thanks for the pull request!

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[codeclimate]

Code Climate has analyzed commit 045c3c8 and detected 55 issues on this pull request.

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Category	Count
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[zenspider]

Claims of speed should include or cite real benchmarks... Otherwise, this seems fine.

[lamont-granquist]

in chef/chef I did that here:

chef/chef#8508 (comment)