[committed] require GOT for R_MIPS_TLS_GOTTPREL

[Eric Christopher <echristo at apple dot com>]

Noticed this while running the gcc testsuite on mips64-elf last  
night. The tls alias testcase was getting a segfault in the linker  
since we were trying to reference a GOT that didn't exist.

Fixed thusly and I added an assert to make it a bit more obvious in  
the future.

Tested on mips64-elf. No regressions and it fixed the one gcc failure  
I noticed.

-eric

2005-12-30  Eric Christopher  <echristo@apple.com>

	* elfxx-mips.c (mips_elf_record_global_got_symbol): Add assert
	to verify we have a got.
	(_bfd_mips_elf_check_relocs): Add R_MIPS_TLS_GOTTPREL to relocs
	needing a GOT.

Attachment: binutils.diff.txt
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