add database-aware MySQL pooling

src/wasm/core.cpp

@@ -146,13 +146,18 @@ static DValue wasm_mysql_call(DValue request)
 	return(wasm_sized_hostcall(request, uce_host_mysql));
 }
 
-bool MySQL::connect(String host, String username, String password)
+bool MySQL::connect(String host, String username, String password, String database)
 {
+	request_host = host;
+	request_username = username;
+	request_password = password;
+	request_database = database;
 	DValue request;
 	request["op"] = "connect";
 	request["host"] = host;
 	request["username"] = username;
 	request["password"] = password;
+	request["database"] = database;
 	DValue response = wasm_mysql_call(request);
 	u64 handle = response["handle"].to_u64();
 	connection = (void*)(uintptr_t)handle;
@@ -804,7 +809,7 @@ void uce_free(void* ptr)
 
 u32 uce_wasm_core_abi_version()
 {
-	return(6);
+	return(7);
 }
 
 int uce_wasm_core_init()