Ruby

• process.c (reduce_factors): New function.
  (timetick2dblnum): Use reduce_factors.
  (timetick2integer): Ditto.
  (make_clock_result): Follow the above change.
  (rb_clock_gettime): Ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42669 b2dd03c8-39d4-4d8f-98ff-823fe69b080e