Fix a required ruby version on gemspec of gemified libraries.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57561 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ext/date/date.gemspec

@@ -8,7 +8,7 @@ Gem::Specification.new do |s|
   s.require_path = %w{lib}
   s.files = %w{lib/date.rb date_core.c date_parse.c date_strftime.c date_strptime.c date_tmx.h depend extconf.rb prereq.mk zonetab.h zonetab.list}
   s.extensions = %w{extconf.rb}
-  s.required_ruby_version = ">= 2.5.0"
+  s.required_ruby_version = ">= 2.5.0dev"
 
   s.authors = ["Tadayoshi Funaba"]
   s.email = [nil]

ext/zlib/zlib.gemspec

@@ -8,7 +8,7 @@ Gem::Specification.new do |s|
   s.require_path = %w{lib}
   s.files = %w{depend extconf.rb zlib.c}
   s.extensions = %w{extconf.rb}
-  s.required_ruby_version = ">= 2.5.0"
+  s.required_ruby_version = ">= 2.5.0dev"
 
   s.authors = ["UENO Katsuhiro"]
   s.email = [nil]

lib/cmath.gemspec

@@ -7,7 +7,7 @@ Gem::Specification.new do |s|
 
   s.require_path = %w{lib}
   s.files = %w{cmath.rb}
-  s.required_ruby_version = ">= 2.5.0"
+  s.required_ruby_version = ">= 2.5.0dev"
 
   s.authors = ["Tadayoshi Funaba"]
   s.email = [nil]

lib/csv.gemspec

@@ -7,7 +7,7 @@ Gem::Specification.new do |s|
 
   s.require_path = %w{lib}
   s.files = %w{csv.rb}
-  s.required_ruby_version = ">= 2.5.0"
+  s.required_ruby_version = ">= 2.5.0dev"
 
   s.authors = ["James Edward Gray II"]
   s.email = [nil]

lib/fileutils.gemspec

@@ -7,7 +7,7 @@ Gem::Specification.new do |s|
 
   s.require_path = %w{lib}
   s.files = %w{fileutils.rb}
-  s.required_ruby_version = ">= 2.5.0"
+  s.required_ruby_version = ">= 2.5.0dev"
 
   s.authors = ["Minero Aoki"]
   s.email = [nil]

lib/webrick/webrick.gemspec

@@ -7,7 +7,7 @@ Gem::Specification.new do |s|
 
   s.require_path = %w{lib}
   s.files = %w{webrick.rb webrick/accesslog.rb webrick/cgi.rb webrick/compat.rb webrick/config.rb webrick/cookie.rb webrick/htmlutils.rb webrick/httpauth.rb webrick/httpauth/authenticator.rb webrick/httpauth/basicauth.rb webrick/httpauth/digestauth.rb webrick/httpauth/htdigest.rb webrick/httpauth/htgroup.rb webrick/httpauth/htpasswd.rb webrick/httpauth/userdb.rb webrick/httpauth.rb webrick/httpproxy.rb webrick/httprequest.rb webrick/httpresponse.rb webrick/https.rb webrick/httpserver.rb webrick/httpservlet.rb webrick/httpservlet/abstract.rb webrick/httpservlet/cgi_runner.rb webrick/httpservlet/cgihandler.rb webrick/httpservlet/erbhandler.rb webrick/httpservlet/filehandler.rb webrick/httpservlet/prochandler.rb webrick/httpservlet.rb webrick/httpstatus.rb webrick/httputils.rb webrick/httpversion.rb webrick/log.rb webrick/server.rb webrick/ssl.rb webrick/utils.rb webrick/version.rb}
-  s.required_ruby_version = ">= 2.5.0"
+  s.required_ruby_version = ">= 2.5.0dev"
 
   s.authors = ["TAKAHASHI Masayoshi", "GOTOU YUUZOU"]
   s.email = [nil, nil]