* Are the symbol versioning specifications right, and are the
compatibility symbols for _malloc_options and _malloc_message workable?
Why do you manually added __sys_compat() for the symbols ?
My reading of the patch shows that you do not change the ABI,
and symbols are still at FBSD_1.0 and even in Symbol.map.
The 1.3 symbols have different names, without prepended '_' ?
Please correct me if I am wrong, but it seems that the __sym_compat()
magic is not needed.
* Is the light editing of the jemalloc manual page sufficient? Keeping
the changes minimal will make regular imports less work, but the
result is less tailored to FreeBSD.
Might be, keep existing but somewhat trimmed malloc(3) page as is, but
add the unedited man from contrib as jemalloc(3), xreferencing it from