Remove StrictJarFile from ClassPathURLStreamHandler

StrictJarFile was moved from libcore to framework/base
(licensing reasons) and in no longer accessible in
the ClassPathURLStreamHandler. I replaced it using
JarFile class.

+ ZipFile compatibility fix, openjdk ZipFile#getInputStream
was not fine with directory entries without "/" suffix (returning null),
fixed a flag to deal with them like in previous impl.

Bug: 25337946
Change-Id: I9832b34664bd331a96cd06aabb4cbf834c58f208
3 files changed