Fix callsites so we don't need allComponentsBy. #31

It was taken from
http://hackage.haskell.org/package/Cabal-1.16.0.3/docs/src/Distribution-Simple-LocalBuildInfo.html#allComponentsBy
since it doesn't exist in Cabal 1.18.*

Obtains all components (libs, exes, or test suites), transformed by the
given function. Useful for gathering dependencies with component context.
Located in "schell/hdevtools/src/Cabal.hs" on line 82