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 :-/)

# example: play sound

lib.winmm <- dyn.load("\\windows\\system32\\winmm.dll")
PlaySoundA <- lib.winmm$PlaySoundA
playsound <- function(path) rdcCall(PlaySoundA$address,"pii)v",path,0,0)
sample <- "c:\\windows\\Media\\tada.wav"
playsound(sample)