[mt416] Death Knight - Runic Empowerment
[mt417] Death Knight - Death coil
[mt418] DK - Death and Decay
[mt419] Death Knight - Necrotic Strike
[mt420] Remove CMSG_REMOVE_GLYPH handler and move Glyph removal in EffectApplyGlyph.
[mt421] Improved Death Knight presences code.
[mt422] Rewrite unit power regeneration