Generate package registraion with instantiation info
Generate package registraion with instantiation info

Correctly setup 'instantiatedWith' in 'InstalledPackageInfo'.

Also ensure that there are no duplicate entries in 'depends'
(I couldn't find the root cause for duplication, so I just
put the test here.)

mydaum/cabal,themoritz/cabal,themoritz/cabal,themoritz/cabal,mydaum/cabal