Patch 8.1.5/API changes

Diff: 8.1.0 (29482) to 8.1.5 (29701) Blizzard Deprecated
 * https://github.com/Gethe/wow-ui-source/commit/93e7041bf9340ca2bcfca8a56feab94ff0bee066
 * https://www.townlong-yak.com/framexml/8.1.5/Blizzard_Deprecated/Deprecated_8_1_5.lua

New
New C_CVar table New C_ClassColor table New C_ItemSocketInfo table New C_Texture table

Changes
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Widgets
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CVars
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