Resist Rings Update

New art, new revealed/unrevealed colors
Fixes

Changed ToCliInventory to SomethingChanged. Can now Reveal objects on
the ground

Added checks so colors won't overwrite other set colors
Destroy Walls at entrances

Added a new function to rooms that is called by players entering an
area. It destroys walls in a small radius around the player, eliminating
the 'trick' aspect of wall spells.

This setup allows walls to be used on exits to block escapes, but does
not allow walls to block entrances. Walls will still function normally
anywhere else in the area, and can still block small passages and the
like, but players will no longer 'stumble' into them.
Added checks

There are some rare but relevant situations where players could still be
using walls to block escape by an enemy. These checks will prevent
destruction of walls by entering angeleds, unguildeds, or DMs.
Renaming, commenting, adjustment

Logon time check in NewOwner replaced with 'if old <> $'. Players
logging on don't have an old owner. The NewOwner function already had
the old owner check and related code.

viWALL_DESTROY_RADIUS is now a room constant. Function is now called
DeleteWallsAroundPlayer, and uses SquaredDistanceTo.
Conditionals, Comments, Constants

Updated conditions and comments as requested. Constants added to the
list of color translations so that items may reference them. Future
items needing single XLAT blue->color translations can take great
advantage of these.

Also cleaned up the code to fit current standard. Item.kod now has a
RevealHiddenColor function that the spell Reveal calls, rather than
adding code into ring.kod's RevealHiddenAttributes function. Now any
item can have a functional revealed color, and new spells or actions can
reveal it at any time.
Comments & Battler

Changed the function to DeleteWallsAroundBattler. Given that it works
for monsters, too, it could definitely be used by content creators to
make monsters that inherently clear walls. Really, the applications are
up to whoever calls the function. I just happen to also put in a call
that occurs every time a player enters an area. I updated the comments
to reflect that.
Update seance.kod

Just buffs the success rate of seance a bit to help hunters.

I removed the flat +15 and in it's place but maxhealth/5 so it might end up as a nerf to mules but a pretty big buff to built players looking to hunter pkers.
Brambles check & squared

Added check for Brambles & Squared the delete radius to match
measurements
Update seance.kod
Merge pull request #106 from M59Gar/wallzone

Wall spells destroyed at entrances
Update seance.kod
Merge pull request #122 from theanax/change---spell-seance

Change---Spell-Seance
Colors fixed

The ten new colors were just using the last two digits of the hex value.
These should be correct now.

Also removed spurious spaces and added comments.
Merge pull request #87 from M59Gar/rings2

Resist Rings Update
Add ring graphic to makefile
Merge remote-tracking branch 'upstream/master'