PING -- MicroBlaze target support patches

[Michael Eager]

Could someone please review these patches?

Add support for Xilinx MicroBlaze processor:

http://gcc.gnu.org/ml/gcc-patches/2010-04/msg01903.html
http://gcc.gnu.org/ml/gcc-patches/2010-04/msg01905.html
http://gcc.gnu.org/ml/gcc-patches/2010-04/msg01908.html
http://gcc.gnu.org/ml/gcc-patches/2010-04/msg01907.html
http://gcc.gnu.org/ml/gcc-patches/2010-04/msg01906.html

-- 
Michael Eager	 eager@eagercon.com
1960 Park Blvd., Palo Alto, CA 94306  650-325-8077