Update xxhash from 0.6.3 to 0.7.0 (#3382)

Adds XXH3 hashing.

packages/xxhash.rb

@@ -3,21 +3,13 @@ require 'package'
 class Xxhash < Package
   description 'xxHash is an extremely fast non-cryptographic hash algorithm, working at speeds close to RAM limits.'
   homepage 'http://cyan4973.github.io/xxHash/'
-  version '0.6.3'
-  source_url 'https://github.com/Cyan4973/xxHash/archive/v0.6.3.tar.gz'
-  source_sha256 'd8c739ec666ac2af983a61dc932aaa2a8873df974d333a9922d472a121f2106e'
+  version '0.7.0'
+  source_url 'https://github.com/Cyan4973/xxHash/archive/v0.7.0.tar.gz'
+  source_sha256 'b34792646d5e19964bb7bba24f06cb13aecaac623ab91a54da08aa19d3686d7e'
 
   binary_url ({
-    aarch64: 'https://dl.bintray.com/chromebrew/chromebrew/xxhash-0.6.3-chromeos-armv7l.tar.xz',
-     armv7l: 'https://dl.bintray.com/chromebrew/chromebrew/xxhash-0.6.3-chromeos-armv7l.tar.xz',
-       i686: 'https://dl.bintray.com/chromebrew/chromebrew/xxhash-0.6.3-chromeos-i686.tar.xz',
-     x86_64: 'https://dl.bintray.com/chromebrew/chromebrew/xxhash-0.6.3-chromeos-x86_64.tar.xz',
   })
   binary_sha256 ({
-    aarch64: '2e1ff84aa860e3706752729eee3b625e55e73bd8ab5cf4f6d5f5c9a88aa2a6ac',
-     armv7l: '2e1ff84aa860e3706752729eee3b625e55e73bd8ab5cf4f6d5f5c9a88aa2a6ac',
-       i686: 'aeee95d5f6d8848bfcad8247bfa5f985ebbda3017b4d49f6748d93a2213b0d47',
-     x86_64: '8996d96cc1981728bc2a826f139c0f7b6189d93075e20d7f2cb56cbd4d119a3e',
   })
 
   def self.build