patch applied (packages/HaXml): Massage the pretty-printing of mixed text + refs, to eliminate bad whitespace.

[Malcolm Wallace]

Thu Dec  3 18:44:11 PST 2009  Malcolm.Wallace at cs.york.ac.uk
  * Massage the pretty-printing of mixed text + refs, to eliminate bad whitespace.
  Ignore-this: 2297ecf52df69be4fa189bbfe7165179
  I'm still not sure this is completely correct, but it is better than before.
  Essentially, sequences of textual-like tree nodes are horizontally
  catenated without spaces, whilst nested element nodes remain laid out
  logically, one per line, with indentation.

    M ./src/Text/XML/HaXml/Pretty.hs -45 +25

View patch online:
http://darcs.haskell.org/packages/HaXml/_darcs/patches/20091204024411-6871e-730524df1ab366c9b9fb4541ba1316b99424ae84.gz