Fix for 'bad encrypted message' errors.

1) There was a regression in the outgoing multipart transport
   logic, such that the same 'identifier' byte would be used
   for all messages (0).  This now works correctly.

2) Added some additional heuristics on the receiving side.
   Now mutlipart containers are only valid for 1hr, and are
   considered invalid if the container size is different from
   the multipart message size.
Fix for batch selection bug
Updated language translations
Added romanian language support
bumping version to 0.9.9.8
Fix for ShortBufferException problem introduced in Android 4.3

Not really sure how it's possible for the system to give us an
extra block of data, but it does if both the input and output
buffers are sized the same during the first decrypt.  This
fixes things, but I wish I better understood why it was broken.
Bumping version to 0.9.9.9
Merge branch 'master' into push-library