connection object needs to be upgraded

[ph3-der-loewe]

The connection object should be updated.
It should contain the following members after the soname change:

Member	Type	Comment
refc	size_t	Reference counter for reference based allocation (refc > 0) or zero for on-stack mode.
flags	uint32_t	General flags
version	int	The protocol version to use
viocon	struct roar_vio_calls *	The pointer to the connection to the server
viocon_store	struct roar_vio_calls	Store for viocon used if needed
errorframe	struct roar_error_frame	The default error frame used for this connection
cb_userdata	void *	Some user data to be passed to the callback function
cb	void (*)(struct roar_connection * con, struct roar_message * mes, void * data, void * userdata)	The callback function used for notify and other asynchron messages
server_stds	struct roar_stds *	The list of standards as supported by the server
server_name	const char *	Server name

The following flags should be defined:

Flag	Value	Status	Comment
NONE	0x00000000	ok	Used to clear flags
FH	0x00000001	obsoleted	Old flag for sysio based connections
VIO	0x00000002	mandatory	VIO based connection
ISCLIENT	0x00000004	???	???
SUPPORT_V2	0x00000008	ok, mandatory if con.version == 2	Both peers support the Version 2 protocol
SUPPORT_EF	0x00000010	new	Both peers support error frames
FREESELF	0x00000020	new	Free the connection object

[ph3-der-loewe]

Should there also be a full struct roar_stds structure present in the connection object?

[ph3-der-loewe]

Should the server name also be present in the object? This may be useful for informational purpose as well as the use-execed-workaround.

[ph3-der-loewe]

Added some more vars to the connection object.