mess. Also cleaned up some functions:
- foldl appeared broken (it recursively called fold).
- Renamed logicalAND/logicalOR to and/or.
- Removed listOfListsToAttrs, eqStrings: obsolete.
- Removed isInList, which does the same thing as elem.
- stringToCharacters: don't return a "" at the end of the list.
- Renamed concatList to concat, as concatList (singular) is a
misnomer: it takes two lists. Likewise, renamed mergeAttr to
mergeAttrs.
misc.nix still contains a lot of stuff that should be refactored and
moved to other files.
svn path=/nixpkgs/trunk/; revision=14013
