Added and update the racc entries on doc/*.

doc/maintainers.rdoc

@@ -206,6 +206,9 @@ Zachary Scott (zzak)
   Marc-Andre Lafortune (marcandre)
 [lib/prime.rb]
   Yuki Sonoda (yugui)
+[lib/racc.rb, lib/racc/*]
+  Aaron Patterson (tenderlove), Hiroshi SHIBATA(hsbt)
+  https://github.com/ruby/racc
 [lib/rdoc.rb, lib/rdoc/*]
   Eric Hodel (drbrain), Hiroshi SHIBATA (hsbt)
   https://github.com/ruby/rdoc

doc/standard_library.rdoc

@@ -33,7 +33,6 @@ OptionParser:: Ruby-oriented class for command-line option analysis
 PP:: Provides a PrettyPrinter for Ruby objects
 PrettyPrinter:: Implements a pretty printing algorithm for readable structure
 PStore:: Implements a file based persistence mechanism based on a Hash
-Racc:: A LALR(1) parser generator written in Ruby.
 RbConfig:: Information of your configure and build of Ruby
 resolv-replace.rb:: Replace Socket DNS with Resolv
 Resolv::  Thread-aware DNS resolver library in Ruby
@@ -85,6 +84,7 @@ Matrix:: Represents a mathematical matrix.
 Mutex_m:: Mixin to extend objects to be handled like a Mutex
 OpenStruct:: Class to build custom data structures, similar to a Hash
 Prime:: Prime numbers and factorization library
+Racc:: A LALR(1) parser generator written in Ruby.
 RDoc:: Produces HTML and command-line documentation for Ruby
 REXML:: An XML toolkit for Ruby
 RSS:: Family of libraries that support various formats of XML "feeds"