Fix light level on Glow enchanted weapons, allow Glow to be cast on lutes, misc bug fixes.

Currently the Glow spell sends $ for light level. Should be using GetLightLevel to determine the light given from spellpower. Also allowed it to be cast on Lutes.

Fixed some wall code issues.

More info in a debug message given when a user gets a NewHold of null.

Added a $ check in shaman blood so we don't call IsClass on null.