Added initial stack info for --package-db
Added initial stack info for --package-db

There is also information on how to reset the stack.

Resolve #2345

themoritz/cabal,sopvop/cabal,themoritz/cabal,thomie/cabal,sopvop/cabal,headprogrammingczar/cabal,mydaum/cabal,themoritz/cabal,kolmodin/cabal,sopvop/cabal,kolmodin/cabal,thomie/cabal,headprogrammingczar/cabal,mydaum/cabal