android build: pin hashes of p4a recipes

contrib/android/p4a_recipes/sdl2/__init__.py

@@ -0,0 +1,19 @@
+import os
+
+from pythonforandroid.recipes.sdl2 import LibSDL2Recipe
+from pythonforandroid.util import load_source
+
+util = load_source('util', os.path.join(os.path.dirname(os.path.dirname(__file__)), 'util.py'))
+
+
+assert LibSDL2Recipe._version == "2.0.9"
+assert LibSDL2Recipe.depends == ['sdl2_image', 'sdl2_mixer', 'sdl2_ttf']
+assert LibSDL2Recipe.python_depends == []
+
+
+class LibSDL2RecipePinned(util.InheritedRecipeMixin, LibSDL2Recipe):
+    md5sum = None
+    sha512sum = "a78a4708b2bb5b35a7c7b7501eb3bd60a9aa3bb95a3d84e57763df4a377185e7312a94b66321eef7ca0d17255e4b402fc950e83ef0dbbd08f14ff1194107dc10"
+
+
+recipe = LibSDL2RecipePinned()