fix up configure to use chromebrew env vars, chage url to bintray, fix dependencies

packages/ncat.rb

@@ -8,20 +8,22 @@ class Ncat < Package
   source_sha256 'a8796ecc4fa6c38aad6139d9515dc8113023a82e9d787e5a5fb5fa1b05516f21'
 
   binary_url ({
-    x86_64: 'https://www.clift.org/fred/chromebrew/ncat-7.60-chromeos-x86_64.tar.xz',
+    x86_64: 'https://dl.bintray.com/chromebrew/chromebrew/ncat-7.60-chromeos-x86_64.tar.xz',
   })
   binary_sha256 ({
     x86_64: '5660ea321436f1b9642d318a77e9b0b5c379825ac0611daaf5f82dd794753598',
   })
 
   depends_on 'buildessential' => :build
-  depends_on 'openssl' 
   depends_on 'filecmd' => :build   #configure uses file 
 
   def self.build
-    #fixup "/usr/bin/file" -> "/usr/local/bin/file" in the configure scripts
-    system "sed -i s#/usr/bin/file#/usr/local/bin/file#g libdnet-stripped/configure"
-    system "./configure"
+    #fixup "/usr/bin/file" -> "file" in the configure script
+    
+    system "sed -i s#/usr/bin/file##{CREW_PREFIX}/bin/file#g libdnet-stripped/configure"
+
+    #without-zenmap in configure removes openssl dependency
+    system "./configure --without-zenmap --prefix=#{CREW_PREFIX} --libdir=#{CREW_LIB_PREFIX}"
     system "cd ncat && make"
   end