[ruby-core:31385] [Feature #3591] Adding Numeric#divisor? (Have working implementation)

Feature #3591: Adding Numeric#divisor? (Have working implementation)
http://redmine.ruby-lang.org/issues/show/3591

Author: Nick Markwell
Status: Open, Priority: Normal

On the 'duckinator' branch of my fork of ruby on github, I have added Numeric#divisor?:
  num.divisor?(other)
is the same as:
  (num % other == 0)

Example usage:
  4.divisor?(2)     #=> true
  1.divisor?(2)     #=> false
  2.4.divisor?(1.2) #=> true
  2.4.divisor?(1.3) #=> false
  126.divisor?(9)   #=> true

I think this would be a very nice feature to add, and would make code using the old (num % other == 0) method much cleaner and easier to understand.

There is a unified diff of it: http://gist.github.com/raw/484144/07b1a6e696cd9301e658ccbc8f90dfcd4d4ef3f1/Numeric_divisor.patch

The original commits can be seen here:
http://github.com/RockerMONO/ruby/commit/f7959f964cb0bf38418904ccb5643db6b689d29c -- First attempt, only worked with Integers
http://github.com/RockerMONO/ruby/commit/12376a6bb1c3ffbd4b470850dd758e2dcd783dda -- Second attempt, should work with anything derived from Numeric that can be used as (num % other == 0)


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