ruby: update to 3.0.0

This release goal is performance, concurrency, and typing. See details
in https://www.ruby-lang.org/en/news/2020/12/25/ruby-3-0-0-released/

New subpackages (reflect of mostly complete upstream ruby gemification)
- ruby-abbrev (from ruby-misc)
- ruby-base64 (from ruby-misc)
- ruby-coverage (from ruby-misc)
- ruby-continuation (from ruby-misc)
- ruby-debug (from ruby-debuglib)
- ruby-english (from ruby-misc)
- ruby-expect (from ruby-misc)
- ruby-fiber (from ruby-misc)
- ruby-find (from ruby-filelib)
- ruby-io-nonblock (from ruby-multithread)
- ruby-io-wait (from ruby-multithread)
- ruby-monitor (from ruby-multithread)
- ruby-net-ftp (from ruby-net)
- ruby-net-http (from ruby-net)
- ruby-net-imap (from ruby-net)
- ruby-net-pop (from ruby-net)
- ruby-net-protocol (from ruby-net)
- ruby-objspace (from ruby-debuglib)
- ruby-open-uri (from ruby-net)
- ruby-pathname (from ruby-filelib)
- ruby-pp (from ruby-prettyprint)
- ruby-pty (from ruby-misc)
- ruby-rbs (NEW)
- ruby-resolv (from ruby-socket)
- ruby-resolv-replace (from ruby-socket)
- ruby-securerandom (from ruby-misc)
- ruby-set (from ruby-misc)
- ruby-shellwords (from ruby-misc)
- ruby-syslog (from ruby-logger)
- ruby-tempfile (from ruby-filelib)
- ruby-tmpdir (from ruby-filelib)
- ruby-tsort (from ruby-misc)
- ruby-typeprof (NEW)
- ruby-un (from ruby-mkmf)
- ruby-weakref (from ruby-misc)

Removed subpackages
- ruby-debuglib (split into ruby-debug,ruby-objspace)
- ruby-filelib (split into ruby-find,ruby-pathname,ruby-tempfile,ruby-tmpdir)
- ruby-misc (split into ruby-abbrev,ruby-base64,ruby-continuation,
    ruby-coverage,ruby-english,ruby-expect,ruby-fiber,ruby-securerandom,
    ruby-set,ruby-shellwords,ruby-tsort,ruby-weakref)
- ruby-multithread (split into ruby-io-nonblock,ruby-io-wait,ruby-monitor)
- ruby-net (split into ruby-net-ftp,ruby-net-http,ruby-net-imap,ruby-net-pop,
    ruby-net-protocol,ruby-open-uri)
- ruby-net-telnet (removed upstream)
- ruby-sdbm (removed upstream)
- ruby-webrick (removed upstream)
- ruby-xmlrpc (removed upstream)

Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
(cherry picked from commit fe4020f23e)

lang/ruby/ruby_find_pkgsdeps

@@ -9,6 +9,10 @@
 RUBY_SIMPLE_VERSION = RUBY_VERSION.split(".")[0..1].join(".")
 failed = false
 
+puts "Loading all installed gems (unstable after external gems are instaled/update)"
+require 'rubygems'
+Gem::Specification.collect{ |g| g.name.downcase }.uniq.each {|g| gem g }
+
 puts "Looking for installed ruby packages..."
 packages=`opkg list-installed '*ruby*' | cut -d' ' -f 1`.split("\n")
 
@@ -27,7 +31,7 @@ require_ignore=%w{foo rubygems/defaults/operating_system win32console java Win32
                   xmlscan/parser xmlscan/scanner xmltreebuilder xml/parser xmlparser xml/encoding-ja xmlencoding-ja
                   iconv uconv win32ole gettext/po_parser gettext/mo libxml psych.jar psych_jars jar-dependencies thread minitest/proveit
 		bundler pry bcrypt net/http/pipeline capistrano/version rubygems/builder rubygems/format diff/lcs graphviz
-		win32api racc/cparse-jruby.jar profile profiler
+		win32api racc/cparse-jruby.jar profile profiler sorted_set jruby coverage/helpers stackprof webrick/https webrick
 	}
 
 builtin_enc=[
@@ -142,22 +146,18 @@ weak_dependency.merge!({
 "ruby-debuglib"=>["ruby-readline"],				#debug.rb
 "ruby-drb"=>["ruby-openssl"],				 	#drb/ssl.rb
 "ruby-irb"=>["ruby-rdoc", "ruby-readline"],		 	#irb/cmd/help.rb
-"ruby-gems"=>["ruby-openssl","ruby-io-console","ruby-webrick",  #rubygems/commands/cert_command.rb rubygems/user_interaction.rb rubygems/server.rb
-		"ruby-bundler"],				#rubygems.rb
-"ruby-mkmf"=>["ruby-webrick"], 					#un.rb
+"ruby-gems"=>["ruby-openssl","ruby-io-console",  		#rubygems/commands/cert_command.rb rubygems/user_interaction.rb
+		"ruby-bundler", "ruby-erb", "ruby-rdoc"],	#rubygems.rb rubygems/server.rb
 "ruby-net"=>["ruby-openssl","ruby-io-console","ruby-zlib"], 	#net/*.rb
 "ruby-optparse"=>["ruby-uri","ruby-datetime"],			#optparse/date.rb optparse/uri.rb
 "ruby-racc"=>["ruby-gems"],					#/usr/bin/racc*
 "ruby-rake"=>["ruby-net","ruby-gems"],				#rake/contrib/ftptools.rb /usr/bin/rake
-"ruby-rdoc"=>["ruby-gems","ruby-readline","ruby-webrick",	#/usr/bin/rdoc and others
+"ruby-rdoc"=>["ruby-gems","ruby-readline",			#/usr/bin/rdoc and others
 	       "ruby-io-console"],				#rdoc/stats/normal.rb
-"ruby-webrick"=>["ruby-openssl"],				#webrick/ssl.rb
 "ruby-testunit"=>["ruby-io-console"],			 	#gems/test-unit-3.1.5/lib/test/unit/ui/console/testrunner.rb
+"ruby-net-http"=>["ruby-open-uri"]				#net/http/status.rb
 })
 
-puts "Preloading gems..."
-Gem::Specification.all.each{ |x| gem x.name }
-
 puts "Looking for package dependencies..."
 package_provides = {}
 package_dependencies = Hash.new { |h,k| h[k]=[] }