Added initial gemspec for Fcntl module.

  [Feature #13206]

  * ext/fcntl/fcntl.gemspec: initial commit.
  * doc/maintainers.rdoc, doc/standard_library.rdoc: Move Fcntl module
    to Default gems section.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57596 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

doc/maintainers.rdoc

@@ -179,8 +179,6 @@ Zachary Scott (zzak)
   Akinori MUSHA (knu)
 [ext/etc]
   _unmaintained_
-[ext/fcntl]
-  _unmaintained_
 [ext/fiber]
   Koichi Sasada (ko1)
 [ext/fiddle]
@@ -248,6 +246,8 @@ Zachary Scott (zzak)
   _unmaintained_
 [ext/dbm]
   _unmaintained_
+[ext/fcntl]
+  _unmaintained_
 [ext/io/console]
   Nobuyuki Nakada (nobu)
 [ext/json]

doc/standard_library.rdoc

@@ -79,7 +79,6 @@ YAML:: Ruby client library for the Psych YAML implementation
 Coverage:: Provides coverage measurement for Ruby
 Digest:: Provides a framework for message digest libraries
 Etc:: Provides access to information typically stored in UNIX /etc directory
-Fcntl:: Loads constants defined in the OS fcntl.h C header file
 Fiddle:: A libffi wrapper for Ruby
 GDBM:: Ruby extension for the GNU dbm (gdbm) library
 IO:: Extensions for Ruby IO class, including #wait and ::console
@@ -111,6 +110,7 @@ BigDecimal:: Provides arbitrary-precision floating point decimal arithmetic
 Date:: A subclass of Object includes Comparable module for handling dates
 DateTime:: Subclass of Date to handling dates, hours, minutes, seconds, offsets
 DBM:: Provides a wrapper for the UNIX-style Database Manager Library
+Fcntl:: Loads constants defined in the OS fcntl.h C header file
 IO::console:: Console interface
 JSON:: Implements Javascript Object Notation for Ruby
 OpenSSL:: Provides SSL, TLS and general purpose cryptography for Ruby

ext/fcntl/fcntl.gemspec

@@ -0,0 +1,17 @@
+Gem::Specification.new do |s|
+  s.name = "Fcntl"
+  s.version = '0.0.1'
+  s.date = '2017-02-10'
+  s.summary = "Loads constants defined in the OS fcntl.h C header file"
+  s.description = "Loads constants defined in the OS fcntl.h C header file"
+
+  s.require_path = %w{lib}
+  s.files = %w{depend extconf.rb fcntl.c}
+  s.extensions = %w{extconf.rb}
+  s.required_ruby_version = ">= 2.5.0dev"
+
+  s.authors = ["Yukihiro Matsumoto"]
+  s.email = ["[email protected]"]
+  s.homepage = "https://www.ruby-lang.org"
+  s.license = "BSD-2-Clause"
+end