Made all version references in python url dynamic

Author: inclement

pythonforandroid/recipes/hostpython3/__init__.py

@@ -7,7 +7,7 @@
 
 class Hostpython3Recipe(Recipe):
     version = '3.7.0'
-    url = 'https://www.python.org/ftp/python/3.7.0/Python-{version}.tgz'
+    url = 'https://www.python.org/ftp/python/{version}/Python-{version}.tgz'
     name = 'hostpython3'
 
     conflicts = ['hostpython2']

pythonforandroid/recipes/python3/__init__.py

@@ -11,7 +11,7 @@
 
 class Python3Recipe(TargetPythonRecipe):
     version = '3.7.0'
-    url = 'https://www.python.org/ftp/python/3.7.0/Python-{version}.tgz'
+    url = 'https://www.python.org/ftp/python/{version}/Python-{version}.tgz'
     name = 'python3'
 
     depends = ['hostpython3']