normally, CDLL(find_library('c')) is fine.  but when running embedded in a context that uses a different runtime version, this will cause an error (example: http://stackoverflow.com/questions/30771380/how-use-ctypes-with-msvc-dll-from-within-matlab-on-windows/).

using ctypes.cdll.msvcrt apparently finds the correct runtime.  i was surprised by this, i thought this was supposed to be identical to find_library('c').

in any case, some libraries (uuid.py) use the one that breaks.  can you either switch everything to ctypes.cdll.msvcrt, or have find_library('c') change to be identical to it?