Merge pull request #772 from uberhacker/add-lha-package

Add lha package

packages/lha.rb

+require 'package'
+
+class Lha < Package
+  description 'LHa for UNIX is a console-based utility that uncompresses and compresses .lha packages.'
+  homepage 'http://freecode.com/projects/lhaforunix'
+  version '1.14i-ac20040929'
+  source_url 'http://prdownloads.sourceforge.jp/lha/11617/lha-1.14i-ac20040929.tar.gz'
+  source_sha1 '2e2eb1ee84fe3fa804fd80e6777d4a30050e017f'
+
+  def self.build
+    system './configure'
+    system 'make'
+  end
+
+  def self.install
+    system "make", "DESTDIR=#{CREW_DEST_DIR}", "install"
+  end
+end