Fix make build for Emacs 23
Experimental refactor of jumping to definition

@hvr In my initial tests this is much more accurate than tags. I don't
know why I never implemented it before.

Downside is that if your code doesn't compile, you don't get the
info.

Existing behaviour for haskell-mode-jump-to-tag is preserved, but now
there are two more options for candidates of M-:

* haskell-mode-jump-to-def -- uses GHCi only.
* haskell-mode-jump-to-def-or-tag -- uses GHCi or falls back to TAGS
  file.

I'll document this on the wiki.
Fix haskell-process-hoogle-ident

@markus1189
Trivial function for dumping minimal imports
Make sure to expand filename when getting definition dir
Rewrite sort-imports to not be line-based (#270)
Sort on just module names (#270)
Test cases for haskell-sort-imports (#270)
Fix OverloadedStrings suggester
use notify instead of notifications-notify