IA-16 --32-segelf: fix: "local label `"0" (instance number 0 of

a dollar label)' is not defined"

Follow-up to #6 ,
for which there was an incomplete fix.

binutils/readelf.c: fix mbrtowc issue building for DJGPP host

Should fix https://github.com/tkchia/build-ia16/issues/23 .

IA-16 gold: fix: don't emit R_386_SEGRELATIVE for weak undef. sym.

IA-16 ld.gold: allow R_386_NONE relocs. in 0-size input sections

IA-16 ld.gold: allow INPUT (-l:...)

IA-16 ld.bfd segelf: fix: never error on undef. weak R_386_PC16

libiberty: fix: -Wstringop-truncation flagged in dyn-string.c

Fix: warnings when building for Ubuntu Hirsute on Launchpad

Merge pull request #9 from corna/binutils-ia16-tkchia

Fixes for GCC 11

IA-16 gas: allow non-absolute for lcall/ljmp segment (woohoo!)