-m68881, -mhard-float and -m68040/-m68060 link from libm020/libm881. With no
json-c there, the linker fell back to the soft-float libm020 build, which
clib2 cannot link: its FPU libm has no soft-float helpers. Add the
libm020/libm881, libb/libm020/libm881 and libb32/libm020/libm881 slots for
newlib, libnix and clib2 (M68K_FPU=hard, from the image's cmake toolchain
file), taking AmigaOS 3 from 15 to 24 libraries.
Allow AMIGA_IMAGE_<OS> to override the compiler image, so the libraries
can be built against a local image before it is published.
Update the link tables. All 8 slots link for every runtime once the
compiler image has the AmigaSDK-gcc cleanup that removed stale toolchain
files. The old clib2 strtoll and newlib gettimeofday gaps came from those
files.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>