Updated to tzdata2014c.
Added a const to API function add_predefine.
Crypto.AES: Added some lost doc about UMAC.
7.8::SSL: Changed remaining unchanged #pike to 7.8.

As this compat module is true Pike 7.8 code, it is most forward
compatible to have all its files in Pike 7.8 mode.
Testsuite: Added some tests of 7.8::Crypto.Buffer.
Rename state to State.
Renamed session to Session.
Renamed SSL.context to SSL.Context.
Cleaned up TLS code a bit. Let the SSL module use its default, since it knows better what is secure or not.
Secure random is the TLS default.
Got rid of the Alert function.
Fixed botched local variable renaming.
import .
0..255 -> 8bit