Test for overflow in the R_MIPS_26 reloc

[Ian Lance Taylor]

Richard Sandiford <rsandifo@redhat.com> writes:

> bfd/
> 	* elfxx-mips.c (mips_elf_calculate_relocation): Don't report an
> 	overflow for calls to undefined weak symbols.
> 
> ld/testsuite/
> 	* ld-mips-elf/jal-overflow-2.[sd]: New test.
> 	* ld-mips-elf/mips-elf.exp: Run it.

This is OK.  Sorry about the breakage.

Ian