Add firejail package (#2648)

packages/firejail.rb

+require 'package'
+
+class Firejail < Package
+  description 'Firejail is a SUID program that reduces the risk of security breaches by restricting the running environment of untrusted applications
+  by using Linux namespaces and seccomp-bpf.'
+  homepage 'https://firejail.wordpress.com'
+  version '0.9.54'
+  source_url 'https://sourceforge.net/projects/firejail/files/firejail/firejail-0.9.54.tar.xz'
+  source_sha256 'ce996854278863f3e91ff185198c7cc1377fb70053d37a43e3b1ef1021c57756'
+
+  binary_url ({
+  })
+  binary_sha256 ({
+  })
+  
+  def self.build
+    system "sed -i 's,-fstack-protector-all,,g' src/common.mk.in"
+    system "sed -i 's,-fstack-protector-all,,g' src/libtrace/Makefile.in"
+    system "sed -i 's,-fstack-protector-all,,g' src/libtracelog/Makefile.in"
+    system "sed -i 's,-fstack-protector-all,,g' src/libpostexecseccomp/Makefile.in"
+    system "./configure", "--prefix=#{CREW_PREFIX}", "--libdir=#{CREW_LIB_PREFIX}"
+    system 'make'
+  end
+
+  def self.install
+    system "make", "DESTDIR=#{CREW_DEST_DIR}", "install"
+  end
+end