Updating to 6.02-pre16 hpa told me 5.x branch is almost dead and 6.x is the way to go. I'm pushing the pre16 before the freeze as 6.02 is about to be released. I'll switch to 6.02 release once released.
cauldron/syslinux/current/SOURCES/sha1.lst
cauldron/syslinux/current/SPECS/syslinux.spec