Rename shakePath to hadrian.
Rename shakePath to hadrian.

[skip ci]

bgamari/shaking-up-ghc,snowleopard/hadrian,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,snowleopard/shaking-up-ghc,izgzhen/hadrian