Fix issue with hash functions in Python 3.2+
Fix issue with hash functions in Python 3.2+

Starting with Python 3.2 hash functions should return Py_hash_t instead of long.

VirusTotal/yara-python,plusvic/yara-python,grrrrrrrrr/yara-python,wxsBSD/yara-python,wxsBSD/yara-python,VirusTotal/yara-python,grrrrrrrrr/yara-python,plusvic/yara-python