[PATCH] Fix handling of Tag_ABI_HardFP_use for ARM

[Jie Zhang]

This patch sets Tag_ABI_HardFP_use to SP when a single precision FPU is 
selected.

It also fixes the merge of Tag_ABI_HardFP_use.  Currently, 
Tag_ABI_HardFP_use is not treated as (SP & DP) when it's zero and 
Tag_VFP_arch != 0.  This patch changes it to conform to the documentation.

No regressions on GAS and ld testsuite. Is it OK?

Regards,
-- 
Jie Zhang
CodeSourcery
(650) 331-3385 x735
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