Fix wrong paths in InstallDev which cause Lua 5.3 headers to be staged
in /usr/include/, overwriting Lua 5.1 headers and leading to widespread
build failures in all Lua related packages.
Fixes: FS#2348
Fixes: 6b161bb8d5 ("lua5.3: package Lua 5.3 version")
Signed-off-by: Jo-Philipp Wich <jo@mein.io>