Hackport update for newer cabal

[ghost]

• changed embedded 1.12 to forked one (1.15), opened pull request to upstream, suggest to move fork to gentoo-haskell (TODO)
• updated Portage/GHC***.hs for newer cabal compatibility
• fix cabal file & version++ :)
• moved Path cabal files to root repo directory because of trying to keep forked cabal repository (submodule) as is.

Thoughts (TODO):

• move default hackage directory to ~
• request hackport-9999 package update Hackport & lesser gentoo-haskell#147 (recursive :D)

[trofi]

The history of hacport.cabal seems to be severely cluttered.

compare two outputs:

git log -p origin/master..nensha/master -- hackport.cabal

git diff -u origin/master..nensha/master -- hackport.cabal

The second one could be even shorter :]

[trofi]

And I'm not sure we really need separate cabal repo for it.
There is no expected development in it safe 2-3 local patches.

[ghost]

oh... you can merge then in your own commit... I were working on re-commiting updates but here is little mistake :)

[ghost]

But it's easier to update forked repository and keep the eye on it. Another good way is processing patches by patching but I more like fork way. In my opinion making another git project embedded is not better way since we lost some clarity :)

At least it's still being possible to update cabal in manual way to avoid annoying warning about outdated cabal.

[trofi]

Forked cabal under gentoo-haskell and applied your patches (i've slightly modified them though).

Thank you!

[ghost]

Good :) Thank you for applieng

you made it better specially in Portage/GHCCore.hs