Re-export Expression from Predicates

src/Expression.hs

src/Predicates.hs

src/Settings/Builders/Alex.hs

src/Settings/Builders/Ar.hs

src/Settings/Builders/Cc.hs

src/Settings/Builders/Configure.hs

src/Settings/Builders/DeriveConstants.hs

src/Settings/Builders/GenApply.hs

src/Settings/Builders/GenPrimopCode.hs

src/Settings/Builders/Ghc.hs

src/Settings/Builders/GhcCabal.hs

src/Settings/Builders/GhcPkg.hs

src/Settings/Builders/Haddock.hs

src/Settings/Builders/Happy.hs

src/Settings/Builders/HsCpp.hs

src/Settings/Builders/Hsc2Hs.hs

src/Settings/Builders/Ld.hs

src/Settings/Builders/Make.hs

src/Settings/Builders/Tar.hs

src/Settings/Default.hs