mknative for config.gcc fix for arm.

mknative-gcc for GCC 10 and earm ports (now including earmv7hf) after
the arm/netbsd-elf.h fix. shark appears to work at least now.

mknative-gcc for GCC 10 and almost all platforms. one of the
myriad of arm platforms, and the powerpc* platforms are not
yet done.

mknative-gcc for gcc 9.3.0 and earmv5*.

regen arm ports for config.gcc fix.

mknative-gcc for GCC 8.3 and all ports.

regen mknative for everyone after:

- NETBSD_ENABLE_PTHREADS removed (default always)
- HAVE_GNU_INDIRECT_FUNCTION enabled for some platforms
- switch to dragondfly bsd locale routines after christos

regen mknative for everyone after:

- NETBSD_ENABLE_PTHREADS removed (default always)
- HAVE_GNU_INDIRECT_FUNCTION enabled for some platforms
- switch to dragondfly bsd locale routines after christos made them work for us

show more ...

regen to give "earm" a v5 default again.

mknative-gcc for GCC 7 and earm targets.

mknative-gcc for alpha, earm, i386, mips64eb, powerpc, sparc,
sparc64, and x86-64. tree does not fully build yet, however.

mknative for GCC 5.3 and *arm* after netbsd-elf.h order fix.

mknative bootstrap-libgcc GCC 5.3 for most arm platforms. having
minor issue with the next step.

regen minor bits for amd64.

merge GCC 4.8 build.

gcc4.5.3 configury for earm