git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@16694 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
enum.c (enum_count, count_all_i, Init_Enumerable),
array.c (rb_ary_count): Sync with trunk. If no argument or
block is given, count the number of all elements.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@16694 b2dd03c8-39d4-4d8f-98ff-823fe69b080e