This part of the Altera Nios II port includes the gdbserver support for 
GNU/Linux target.  OK to commit?

-Sandra

2013-04-21  Sandra Loosemore  <sandra@codesourcery.com>
	    Andrew Jenner  <andrew@codesourcery.com>

	gdb/gdbserver/
	* Makefile.in (SFILES): Add linux-nios2-low.c.
	(clean): Add action to delete nios2-linux.c.
	(nios2-linux.c): New rule.
	* configure.srv: Add nios2*-*-linux*.
	* linux-nios2-low.c: New.