[ELF] Factor out the code creates a Reference for the specified symbol
and relocation entry into the two virtual functions.
[Mips] Create ELF object reader for MIPS target.
[Mips] Fix addendum reading for R_MIPS_HI16 / R_MIPS_LO16 relocations.
[Mips] Fix addendum reading for R_MIPS_32 relocation.
[Mips] Fix addendum reading for R_MIPS_26 relocation.