gas/
* config/tc-mips.c (imm_expr, imm2_expr, offset_expr): Tweak commentary.
(imm_reloc): Delete.
(md_assemble): Remove imm_reloc handling.
(mips_ip): Update commentary. Use offset_expr and offset_reloc
rather than imm_expr and imm_reloc for 'i', 'j' and 'u'.
Use a temporary array rather than imm_reloc when parsing
constant expressions. Remove imm_reloc initialization.
(mips16_ip): Update commentary. Use offset_expr and offset_reloc
for the relaxable field. Use a relax_char variable to track the
type of this field. Remove imm_reloc initialization.