"stdlib strfrom Add copysign to fix NAN issue on riscv" fix
incomformity of strform with C99. (from v2.37)
"Assume only FLAG_ELF_LIBC6 support" deprecated all other
FLAG_ELFs which actually deprecated long ago for all arches.
(from v2.37)
"Restore ldconfig libc6 implicit soname logic" fix mistaken
of the above patch. (from v2.38)
