Add RSU-Client package (#3113)

* Add RSU-Client

Adds a package for the RuneScape Unix/Linux Client.

* Much better sed-ing technique

* Decrease verbosity

* Don't assume CREW_PREFIX

packages/rsu_client.rb

+require 'package'
+
+class Rsu_client < Package
+  description 'RSU-Client is a RuneScape Client Launcher written for the now Legacy client and now OldSchool.'
+  homepage 'https://github.com/rsu-client/rsu-client'
+  version '4.3.7'
+  source_url 'https://github.com/rsu-client/rsu-client/archive/v4.3.7.tar.gz'
+  source_sha256 '7cc589de111baad956c0c41a4d7f1b45168886bf623dd3886d07fa3d1dfd604c'
+
+  depends_on 'jdk8'
+  depends_on 'p7zip'
+  depends_on 'wxwidgets'
+  depends_on 'xdg_utils'
+  depends_on 'sommelier'
+
+  def self.patch
+    Dir.chdir 'runescape' do
+      system "for f in \$(grep -r /usr/bin .|egrep -v '^Binary'|egrep -o '^[^:]+');do
+                sed -i 's,/usr/local,/usr,g' \${f}
+              done"
+      system "for f in \$(grep -r /usr/bin .|egrep -v '^Binary'|egrep -o '^[^:]+');do
+                sed -i 's,/usr,#{CREW_PREFIX},g' \${f}
+              done"
+    end
+  end
+
+  def self.build
+    system 'cpan install Archive::Extract exit'
+  end
+
+  def self.install
+    system 'mkdir', '-p', "#{CREW_DEST_PREFIX}/share"
+    system 'cp', '-a', 'runescape', "#{CREW_DEST_PREFIX}/share/"
+    system 'mkdir', '-p', "#{CREW_DEST_PREFIX}/bin"
+    system 'ln', '-s', "#{CREW_PREFIX}/share/runescape/runescape", "#{CREW_DEST_PREFIX}/bin/runescape"
+  end
+end