adding to_dict method to SON class

bump version - fix for dbref perf. regression

bumping version: faster decoding, master-slave support, use code_w_sc…

…ope, new-style dbrefs, auto-ref

faster bson encoding, some fixes

adding support for python 2.3

support python24

fix for importing etree, cbson fix

connection pooling, fail on insert instead of query when using non ut…

…f-8 strings

release tomorrow

fallback to python if c extension doesn't build