Implement number of hit indicators for UF and RoF

There is a small display bug with the initial cast of the spell,
but it updates quickly enough that it shouldn't be too noticeable
This still needs to be fixed though

Changed SendBuffDurationPacket to take a Buffs_Struct by reference
to allow more of the data to be obtained without more params

Added Client::SendBuffNumHitPacket(Buffs_Struct &buff, int slot)

common/eq_packet_structs.h

@@ -534,7 +534,7 @@ struct SpellBuffFade_Struct {
 /*007*/	uint8 unknown7;
 /*008*/	uint32 spellid;
 /*012*/	uint32 duration;
-/*016*/	uint32 unknown016;
+/*016*/	uint32 num_hits;
 /*020*/	uint32 unknown020;	//prolly global player ID
 /*024*/	uint32 slotid;
 /*028*/	uint32 bufffade;
@@ -4602,11 +4602,13 @@ struct BuffIconEntry_Struct
 	uint32 buff_slot;
 	uint32 spell_id;
 	uint32 tics_remaining;
+	uint32 num_hits;
 };
 
 struct BuffIcon_Struct
 {
 	uint32 entity_id;
+	uint8  all_buffs;
 	uint16 count;
 	BuffIconEntry_Struct entries[0];
 };