* complax.c: [DOC] Document number conversion of `nil` by @skade [fix GH-570] [ci skip]
* object.c, rational.c: ditto.
* object.c: fix document of Kernel.Stirng by @suzukaze
[fix GH-743][ci skip]
* object.c (Module#const_defined?): [DOC] Revise the documentation.
Patch by Xavier Noria.
[Fixes GH-754] https://github.com/ruby/ruby/pull/754
* object.c: [DOC] Revise documentation by Marcus Stollsteimer at
[ruby-core:66368]. [Bug #10526]
* #inspect: be more specific about generated string, remove
obsolete example.
* #nil?: use code examples instead of different call-seq's.
* #tap: clarify what is yielded.
* Integer(): be more specific about to_int and to_i, remove
reference to Ruby 1.8.
* Array(): fix error.
* Class: fix variable name style and indentation in example.
* improve consistency, fix typos and formatting.
merge revision(s) 45375,48260,48320,48746: [Backport #10526]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@49448 b2dd03c8-39d4-4d8f-98ff-823fe69b080e