Allows you to select a TOS/DSCP value for packets being transmitted
	on the client-side, based on an ACL.

	clientside_tos ds-field [!]aclname ...

	Example where normal_service_net uses the TOS value 0x00
	and good_service_net uses 0x20

	acl normal_service_net src 10.0.0.0/24
	acl good_service_net src 10.0.1.0/24
	clientside_tos 0x00 normal_service_net
	clientside_tos 0x20 good_service_net

	Note: This feature is incompatible with qos_flows. Any TOS values set here
	will be overwritten by TOS values in qos_flows.

	The TOS/DSCP byte must be exactly that - a octet value  0 - 255, or
	"default" to use whatever default your host has.
	Note that only multiples of 4 are usable as the two rightmost bits have
	been redefined for use by ECN (RFC 3168 section 23.1).
	The squid parser will enforce this by masking away the ECN bits.