Add jump functions to rand module

Jump functions returns the state after performing jump calculation to a
rand module internal state, which is equivalent to perform a large
number of calls of calculating new states for XorShift*/+ algorithms.
This commit add jump functions for exsplus and exs1024 algorithms, and a
wrapper function jump/1.  The wrapper function will cause error with
reason "not_implemented" if the jump function for the algorithm is not
implemented.

This commit adds following new functionalities:

  - Add new functions rand:jump/0 and rand:jump/1

  - Add the member jump to type alg_handler(), a fun for performing
    the jump function

  - Add jump functions for exsplus, equivalent to 2^64 calls

  - Add jump functions for exs1024, equivalent to 2^512 calls

  - Revise seed_put/1, seed/1, seed/2
    See <https://github.com/erlang/otp/pull/1235#discussion_r86950557>

  - Add dummy jump function for exs64 calling
    erlang:error(not_implemented)

  - Add jump function test cases as follows:

    * Add Common Test group reference_jump
    * Add tests for jump/0 to reference_jump_procdict/1
    * Rename tests for jump/1 to reference_jump_state/1
    * Rename gen_jump/1 to gen_jump_1/1
    * Add Common Tests reference_jump_procdict and reference_jump_state
      to the group reference_jump

  - Add jump function documentation

This commit also changes the Copyright year for Kenji Rikitake's code
from 2015 to 2015-2016.

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