Make tests work in Python 3.x
Make tests work in Python 3.x

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