Use dev-lang/luajit instead of dev-lang/lua (ineffective with USE=-lua)

Packages describing “luajit” as local USE flag

Package “luajit” Flag Description
dev-libs/efl USE dev-lang/luajit instead of dev-lang/lua
www-servers/nginx Use dev-lang/luajit instead of dev-lang/lua for lua support when building the lua http module.
media-video/obs-studio Build support for scripting via Luajit.

All packages providing a “luajit” USE flag (1)