If we make R_MIPS_LO16 a relative relocation, linker:
- never creates R_MIPS_COPY relocation for it
- attempts to create R_MIPS_REL32 dynamic relocation if R_MIPS_LO16's
target is a preemptible symbol
Differential Revision: http://reviews.llvm.org/D18607
llvm-svn: 264956