[PATCH] cortex-m0 support

[Daniel Gutson]

Hi,
   the following small patch adds support for the ARM Cortex-M0 
processor, as a behavior clone of Cortex-M1.

This is the gcc counterpart of the binutils patch submitted in 
http://sourceware.org/ml/binutils/2009-03/msg00373.html

If approved, please commit it for me since I don't have write access.

Thanks,
	Daniel.

---

2009-06-25  Daniel Gutson  <dgutson@codesourcery.com>

	gcc/
	* config/arm/arm-cores.def: Added core cortex-m0.
	* config/arm/arm-tune.md ("tune"): Aded cortexm0.
	* doc/invoke.texi: Added entry for cpu ARM Cortex-M0.

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