* array.c: Document synonymous methods, by windwiny [GH-277]
* bignum.c: ditto
* complex.c: ditto
* dir.c: ditto
* encoding.c: ditto
* enumerator.c: ditto
* numeric.c: ditto
* proc.c: ditto
* re.c: ditto
* string.c: ditto


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40259 b2dd03c8-39d4-4d8f-98ff-823fe69b080e