[lto][patch] Clear DECL_CONTEXT if it is a NAMESPACE_DECL

[Rafael Espindola]

We don't use DECL_CONTEXT that are NAMESPACE_DECL in lto1. In fact, I
am not sure if we use namespaces at all. This patch clears
DECL_CONTEXT to save some memory and disk.

Did a bootstrap and a regression test on linux x86-64.

2009-01-07  Rafael Avila de Espindola  <espindola@google.com>

	* tree.c (reset_decl_lang_specific): Clear DECL_CONTEXT if it is a
	NAMESPACE_DECL.

Cheers,
-- 
Rafael Avila de Espindola

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