Merge pull request #1291 from AndreMiras/feature/fix_file_not_found_on_external_sd

fixes find_library when deployed external storage

Author: inclement

pythonforandroid/recipes/python2/patches/ctypes-find-library-updated.patch

@@ -12,7 +12,7 @@ index 52b3520..01b13a9 100644
 +if True:
 +    def find_library(name):
 +        # Check the user app lib dir
-+        app_root = os.path.abspath('./').split(os.path.sep)[0:4]
++        app_root = os.path.abspath('../../').split(os.path.sep)
 +        lib_search = os.path.sep.join(app_root) + os.path.sep + 'lib'
 +        for filename in os.listdir(lib_search):
 +            if filename.endswith('.so') and name in filename: