Import polyparse-1.9 as wip/hs-polyparse.

A variety of alternative parser combinator libraries, including the
original HuttonMeijer set. The Poly sets have features like good error
reporting, arbitrary token type, running state, lazy parsing, and so on.
Finally, Text.Parse is a proposed replacement for the standard Read class,
for better deserialisation of Haskell values from Strings.
+ hs-polyparse
Update to 1.18.3

CHANGELOG:
* (1.18.2): bugfix for erroneous boolean intepretation of some macro
            expansions in #if clauses
* (1.18.3): further rewrites of the #if expression parser
Update to 1.14.0.1

CHANGELOG:
1.14.0 --> 1.14.0.1
===============

Nothing has actually changed here (apart from the CHANGELOG). This release
is done to include InternalParser.hs generated with happy 1.19 so that it
compiles with GHC 7.8.