[lto][patch] Small fix for the handling of weak decls

[Rafael Espindola]

If we see first a WEAKUNDEF  and then a WEAKDEF, we should use the
second. Also, the resolution of WEAKUNDEF should be LDPR_RESOLVED_IR.

2008-12-09  Rafael Avila de Espindola  <espindola@google.com>

	* lto-function-in.c (get_resolution): Fix handling of weak decls.

Cheers,
-- 
Rafael Avila de Espindola

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