Changes for compatibility with ghc-7.10-rc2

2 modules: Name clashes caused by Applicative-Monad change in Prelude
2 modules: Ambiguities caused by Foldable/Traversable in Prelude
2 modules: Backwards incompatible changes in time-1.5 for defaultTimeLocale
9 modules: {-# LANGUAGE FlexibleContexts #-} (because GHC checks inferred types
           now, in addition to explicitly given type signatures)

Also silenced warnings about tab characters in source files.

src/runtime/haskell/PGF/Linearize.hs

@@ -1,3 +1,4 @@
+{-# LANGUAGE FlexibleContexts #-}
 module PGF.Linearize
             ( linearize
             , linearizeAll

src/runtime/haskell/PGF/Parse.hs

@@ -1,4 +1,4 @@
-{-# LANGUAGE BangPatterns, RankNTypes #-}
+{-# LANGUAGE BangPatterns, RankNTypes, FlexibleContexts #-}
 module PGF.Parse
           ( ParseState
           , ErrorState

src/runtime/haskell/PGF/Printer.hs

@@ -1,3 +1,4 @@
+{-# LANGUAGE FlexibleContexts #-}
 module PGF.Printer (ppPGF,ppCat,ppFId,ppFunId,ppSeqId,ppSeq,ppFun) where
 
 import PGF.CId

src/runtime/haskell/PGF/Tokenizer.hs

@@ -9,6 +9,7 @@ module PGF.Tokenizer
        ( mkTokenizer
        ) where
 
+import Prelude hiding ((<*>))
 --import Data.List (intercalate)
 --import Test.QuickCheck
 import FST.TransducerInterface