Hans-Christoph Steiner 5911e34b43 use access time to remove old cache files >= android-21
In android-21, they exposed the formerly internal method for getting stat
structs of files.  From that, we can get the last access time, which is a
much better way to determine which files to delete rather than last
modified time.

closes #644
2016-10-25 11:54:40 +03:30
..
2016-08-02 11:25:30 +02:00