Add unicorn_py3 folder to setup.py (#1942)

* Add unicorn_py3 folder to setup.py

* Run sample in CI

* Fix pip install & py2 breakage

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Co-authored-by: mio <mio@lazym.io>

bindings/python/setup.py

@@ -232,7 +232,7 @@ Further information is available at http://www.unicorn-engine.org
 
 setup(
     provides=['unicorn'],
-    packages=['unicorn'],
+    packages=setuptools.find_packages(include=["unicorn", "unicorn.*"]),
     name='unicorn',
     version=VERSION,
     author='Nguyen Anh Quynh',

bindings/python/unicorn/unicorn_py2.py

@@ -17,6 +17,9 @@ from collections import namedtuple
 # years since EOL of Python2 so it should be fine.
 from . import x86_const, arm_const, arm64_const, unicorn_const as uc
 
+# Compatibility placeholder, nothing special here
+ucsubclass = 0
+
 if not hasattr(sys.modules[__name__], "__file__"):
     __file__ = inspect.getfile(inspect.currentframe())