Log Message:
devel/ruby-sexp-processor: update to 4.16.0

4.16.0 / (2021-10-27)

o 4 minor enhancements:

  * Added Sexp#value (pushed up from ruby_parser).
  * Aliased Sexp#concat to #_concat and use that so it can be overridden.
  * Cache the #hash result.
  * StrictSexp mode (4) now covers concat.

o 3 bug fixes:

  * Fix some doco on each_sexp to clarify that it is not recursive.
  * Fixed a bug calling enum_for when using each_of_type w/ no block.
  * Minor fixes to pt_testcase.rb for custom timeouts and better error
    handling.