Pkg2: slight error/info messaging tweak.
Merge branch 'master' of github.com:JuliaLang/julia
Merge branch 'master' of github.com:JuliaLang/julia
Revert "Simplify Pkg2.resolve"

This reverts commit eeb34f7c1878922c98a1b696b9bd7db146422f43.

This is deeply broken. Resolve simply doesn't work.