account for package renaming hoohah in newer versions of boto
Merge branch 'master' of github.com:migurski/TileStache

Conflicts:
	TileStache/S3.py
patched tilestache-seed to allow for retries and to write failed tile requests to a log file
Added apparently-working Cascadenik provider under Goodies
Added notes about new Cascadenik provider to changelog
Bumped to 1.41.0 with new TileStache.Goodies.Providers.Cascadenik to skip Mapnik XML where possible
add tilestache-clean manpage
Added support for local bitmaps by filename or URL
Completed support for bitmaps in Sandwich layer source with global tiling
Bumped to 1.42.0 with addition of Sandwich provider bitmap layer src
fix minus signs in tilestache-clean manpage
Papered over a weird scaling/appearance bug in GDAL provider
Bumped to 1.42.1 with fix for strange appearance bug in GDAL provider interpolation
Added use_locks flag to S3 cache creation
removing references to the old mapnik2 module
oops
Added new tilestache-list script for running off simple lists of tiles
Bumped to 1.43.0 with new S3 cache use_locks option and tilestache-list.py script
Switch 'requires' to 'install_requires' to fix dependency installation in pip
Add key_prefix option to Memcache cache.