Revert and disable readability-convert-member-functions-to-static

This breaks on GCC 6.3

Source/.clang-tidy

@@ -32,6 +32,7 @@
 #   A purely stylistic change that we do not want.
 #
 # -modernize-concat-nested-namespaces
+# -modernize-avoid-bind
 #   Compatibility with older compilers.
 Checks: >
   -*,
@@ -47,7 +48,8 @@ Checks: >
   readability-*,
   -modernize-avoid-c-arrays,
   -modernize-use-trailing-return-type,
-  -modernize-concat-nested-namespaces
+  -modernize-concat-nested-namespaces,
+  -modernize-avoid-bind
 
 HeaderFilterRegex: "^(Source|test)\\.h$"
 

Source/dvlnet/tcp_client.cpp

@@ -102,9 +102,7 @@ void tcp_client::start_recv()
 {
 	sock.async_receive(
 	    asio::buffer(recv_buffer),
-	    [this](auto &&PH1, auto &&PH2) {
-		    handle_recv(std::forward<decltype(PH1)>(PH1), std::forward<decltype(PH2)>(PH2));
-	    });
+	    std::bind(&tcp_client::handle_recv, this, std::placeholders::_1, std::placeholders::_2));
 }
 
 void tcp_client::handle_send(const asio::error_code &error, size_t bytesSent)

Source/dvlnet/tcp_server.cpp

@@ -62,9 +62,7 @@ void tcp_server::start_recv(const scc &con)
 {
 	con->socket.async_receive(
 	    asio::buffer(con->recv_buffer),
-	    [this, con](auto &&PH1, auto &&PH2) {
-		    handle_recv(con, std::forward<decltype(PH1)>(PH1), std::forward<decltype(PH2)>(PH2));
-	    });
+	    std::bind(&tcp_server::handle_recv, this, con, std::placeholders::_1, std::placeholders::_2));
 }
 
 void tcp_server::handle_recv(const scc &con, const asio::error_code &ec,
@@ -160,9 +158,7 @@ void tcp_server::start_accept()
 	auto nextcon = make_connection();
 	acceptor->async_accept(
 	    nextcon->socket,
-	    [this, nextcon](auto &&PH1) {
-		    handle_accept(nextcon, std::forward<decltype(PH1)>(PH1));
-	    });
+	    std::bind(&tcp_server::handle_accept, this, nextcon, std::placeholders::_1));
 }
 
 void tcp_server::handle_accept(const scc &con, const asio::error_code &ec)
@@ -185,9 +181,7 @@ void tcp_server::start_timeout(const scc &con)
 {
 	con->timer.expires_after(std::chrono::seconds(1));
 	con->timer.async_wait(
-	    [this, con](auto &&PH1) {
-		    handle_timeout(con, std::forward<decltype(PH1)>(PH1));
-	    });
+	    std::bind(&tcp_server::handle_timeout, this, con, std::placeholders::_1));
 }
 
 void tcp_server::handle_timeout(const scc &con, const asio::error_code &ec)