Add quakespasm package (#2650)

packages/quakespasm.rb

+require 'package'
+
+class Quakespasm < Package
+  description 'A modern, cross-platform Quake game engine based on FitzQuake.'
+  homepage 'http://quakespasm.sourceforge.net'
+  version '0.93.1'
+  source_url 'https://sourceforge.net/projects/quakespasm/files/Source/quakespasm-0.93.1.tgz'
+  source_sha256 'ed3ee6ba7e3d9454c7620757cc166e13d892f1167c7b74bef4f067e350d835ae'
+
+  binary_url ({
+  })
+  binary_sha256 ({
+  })
+
+  depends_on 'libglu'
+  depends_on 'libvorbis'
+  depends_on 'libmad'
+  depends_on 'freeglut'
+
+  def self.build
+    Dir.chdir ("Quake") do
+      system 'make'
+    end
+  end
+
+  def self.install
+    FileUtils.mkdir_p "#{CREW_DEST_PREFIX}/bin"
+    Dir.chdir ("Quake") do
+      system "sed -i 's,/usr/local/games/quake,#{CREW_DEST_PREFIX}/bin/,g' Makefile"
+      system "make", "install"
+    end
+  end
+end