This is a patch release that fixed building issues with various Linux distros caused by compilation flags introduced for a Debian build. Besides compilation, these flags also have impact on performance and some may or may not be put back in the future, though in a controlled fashion, since not all distros support them (or they do but not in the same way or with the same interactions with other flags), and their effect isn't clear yet.
The RELRO flag isn't one of the affected flags, and it stays. Mostly flags related to other hardening options are currently reviewed. Golf is a memory safe language and places limitations on stack allocations, and some of the flags effectively duplicate the effort. Future releases will also limit the depth of stack calls, and these flags will be evaluated for utility, safety and performance.
For now, it's a transitory release until they get sorted out.