matplotlib Code

fixed bug in dateutil version check

added pytz-2007g

remove old version of pytz

note pyparsing change to API_CHANGES

added checks that also print version numbers for
pyparsing, pytz, dateutil, configobj

updated pyparsing to version 1.4.8

added recarray utils module

move pyparsing from lib/matplotlib/ to lib/
install pyparsing only if not already available

make data files float32 binary, not float64 (save yet more space)
lats and lons are truncated to 3 decimal places, so they gzip better too.

specify endian-ness in dtype, instead of using byteswap()