[MacOSX] Manage older OpenSSL API (needed for OSX 10.6) and probably older linuxes

patches/boost_macosx_older_openssl.patch

+=== modified file 'boost/asio/ssl/impl/context.ipp'
+--- boost/asio/ssl/impl/context.ipp	2013-12-30 14:53:15 +0000
++++ boost/asio/ssl/impl/context.ipp	2013-12-30 19:08:01 +0000
+@@ -236,19 +236,27 @@
+ boost::system::error_code context::clear_options(
+     context::options o, boost::system::error_code& ec)
+ {
+-#if !defined(SSL_OP_NO_COMPRESSION)
++#if (OPENSSL_VERSION_NUMBER >= 0x009080DFL) \
++  && (OPENSSL_VERSION_NUMBER != 0x00909000L)
++# if !defined(SSL_OP_NO_COMPRESSION)
+   if ((o & context::no_compression) != 0)
+   {
+-#if (OPENSSL_VERSION_NUMBER >= 0x00908000L)
++# if (OPENSSL_VERSION_NUMBER >= 0x00908000L)
+     handle_->comp_methods = SSL_COMP_get_compression_methods();
+-#endif // (OPENSSL_VERSION_NUMBER >= 0x00908000L)
++# endif // (OPENSSL_VERSION_NUMBER >= 0x00908000L)
+     o ^= context::no_compression;
+   }
+-#endif // !defined(SSL_OP_NO_COMPRESSION)
++# endif // !defined(SSL_OP_NO_COMPRESSION)
+ 
+   ::SSL_CTX_clear_options(handle_, o);
+ 
+   ec = boost::system::error_code();
++#else // (OPENSSL_VERSION_NUMBER >= 0x009080DFL)
++      //   && (OPENSSL_VERSION_NUMBER != 0x00909000L)
++  (void)o;
++  ec = boost::asio::error::operation_not_supported;
++#endif // (OPENSSL_VERSION_NUMBER >= 0x009080DFL)
++       //   && (OPENSSL_VERSION_NUMBER != 0x00909000L)
+   return ec;
+ }
+ 
+@@ -428,7 +436,8 @@
+ 
+   if (format == context_base::asn1)
+   {
+-    if (::SSL_CTX_use_certificate_ASN1(handle_, buffer_size(certificate),
++    if (::SSL_CTX_use_certificate_ASN1(handle_,
++          static_cast<int>(buffer_size(certificate)),
+           buffer_cast<const unsigned char*>(certificate)) == 1)
+     {
+       ec = boost::system::error_code();
+@@ -929,7 +938,7 @@
+ {
+   return ::BIO_new_mem_buf(
+       const_cast<void*>(buffer_cast<const void*>(b)),
+-      buffer_size(b));
++      static_cast<int>(buffer_size(b)));
+ }
+ 
+ #endif // !defined(BOOST_ASIO_ENABLE_OLD_SSL)
+