Migrates greenlet to new python3 recipe, fixes #1245
Migrates greenlet to new python3 recipe, fixes #1245

Also bump to latest version 0.4.15.

rnixx/python-for-android,kronenpj/python-for-android,PKRoma/python-for-android,kronenpj/python-for-android,germn/python-for-android,rnixx/python-for-android,rnixx/python-for-android,germn/python-for-android,rnixx/python-for-android,germn/python-for-android,PKRoma/python-for-android,PKRoma/python-for-android,kivy/python-for-android,PKRoma/python-for-android,germn/python-for-android,kivy/python-for-android,germn/python-for-android,kivy/python-for-android,PKRoma/python-for-android,kronenpj/python-for-android,germn/python-for-android,kronenpj/python-for-android,kivy/python-for-android,rnixx/python-for-android,rnixx/python-for-android,kivy/python-for-android,kronenpj/python-for-android