[7.0] Display a warning if Renamer is not present using legacy Forge versions#1071

Jonathing wants to merge 2 commits intoMinecraftForge:FG_7.0MinecraftForge/ForgeGradle:FG_7.0from

Jonathing:feat/jonathing/7.0/renamer-missing-warningJonathing/ForgeGradle:feat/jonathing/7.0/renamer-missing-warningCopy head branch name to clipboard