message: Remove boost dependency (boost/assign/std/vector.hpp)
  Github-Pull:
  Rebased-From:
diff: #include <support/allocators/zeroafterfree.h>
  #include <test/test_bitcoin.h>
  -#include <boost/assign/std/vector.hpp> // for 'operator+=()'
  #include <boost/test/unit_test.hpp>
  -using namespace boost::assign; // bring 'operator+=()' into scope
  -
  BOOST_FIXTURE_TEST_SUITE(streams_tests, BasicTestingSetup)
  BOOST_AUTO_TEST_CASE(streams_vector_writer)
  @@ -80,17 +77,17 @@ BOOST_AUTO_TEST_CASE(streams_serializedata_xor)
  // Degenerate case
  - key += '\x00';
  - key += '\x00';
  + key.push_back('\x00');
  + key.push_back('\x00');
  ds.Xor(key);
  BOOST_CHECK_EQUAL(
  std::string(expected_xor.begin(), expected_xor.end()),
  std::string(ds.begin(), ds.end()));
  - in += '\x0f';
  - in += '\xf0';
  - expected_xor += '\xf0';
  - expected_xor += '\x0f';
  + in.push_back('\x0f');
  + in.push_back('\xf0');
  + expected_xor.push_back('\xf0');
  + expected_xor.push_back('\x0f');
  // Single character key
  @@ -98,7 +95,7 @@ BOOST_AUTO_TEST_CASE(streams_serializedata_xor)
  ds.insert(ds.begin(), in.begin(), in.end());
  key.clear();
  - key += '\xff';
  + key.push_back('\xff');
  ds.Xor(key);
  BOOST_CHECK_EQUAL(
  std::string(expected_xor.begin(), expected_xor.end()),
  @@ -108,17 +105,17 @@ BOOST_AUTO_TEST_CASE(streams_serializedata_xor)
  in.clear();
  expected_xor.clear();
  - in += '\xf0';
  - in += '\x0f';
  - expected_xor += '\x0f';
  - expected_xor += '\x00';
  + in.push_back('\xf0');
  + in.push_back('\x0f');
  + expected_xor.push_back('\x0f');
  + expected_xor.push_back('\x00');
  ds.clear();
  ds.insert(ds.begin(), in.begin(), in.end());
  key.clear();
  - key += '\xff';
  - key += '\x0f';
  + key.push_back('\xff');
  + key.push_back('\x0f');
  ds.Xor(key);
  BOOST_CHECK_EQUAL(
  