* bfd-in.h (bfd_h8300_pad_address): Declare.
* bfd-in2.h: Regenerate.
* cpu-h8300.c (bfd_h8300_pad_address): New function.
* coff-h8300.c (h8300_reloc16_estimate): Use it to canonicalize
addresses before checking whether they can be relaxed.
(h8300_reloc16_extra_cases): Likewise for the R_MOVL2 sanity check.
Don't complain about overflows in general 8-bit relocations.
* elf32-h8300.c (elf32_h8_relax_section): Use bfd_h8300_pad_address.
Fix handling of R_H8_DIR24A8.
ld/testsuite/
* ld-h8300/relax-3{.s,.d,-coff.d}: New test.
* ld-h8300/h8300.exp: Run it.
(elf32_h8_relax_section) <R_H8_DIR16A8>: Adjust position of relocation.
<R_H8_DIR32A16>: Fix type of relocation.
* ld-h8300/h8300.exp: Replace loop with explicit list. Run relax.d
unconditionally. Run relax-2.d for *-elf targets.
* ld-h8300/relax.d: Fix typo.
* ld-h8300/relax.s: Add 0x prefixes.
* ld-h8300/relad-2.[sd]: New test.
