mips.c (mips_output_conditional_branch): Support PIC-safe out-of-range branch and branch-likely.

* config/mips/mips.c (mips_output_conditional_branch): Support
PIC-safe out-of-range branch and branch-likely.
* config/mips/mips.md (attr length): PIC-safe out-of-range
branches are longer.
("jump"): Support PIC-safe out-of-range-for-branch jumps.  Remove
unused code to support indirect jumps.

From-SVN: r60058