bigger pydc update: - cleanups and refactoring - python 2 fixes in var conversions (especially w/ respect to int vs long) - fix to pydc.free() which didn't work at all - fix to return python bool as actual bool - test lib covering all conversions (manual verification, though :-/)

# manage by auto-reference?

# package foo uses dynport bar
#
# 1. dynport bar loaded - loads bar shared library
# 2. package foo uses bar
# 3. copy function from dynport
# 3. detach dynport bar
# 4.