Fix type of "fp" and other registers for Nios II.

2014-03-25  Sandra Loosemore  <sandra@codesourcery.com>

	gdb/
	* features/nios2-cpu.xml: Correct types of "gp", "fp", "ea", and
	"ra" registers.
	* features/nios2-linux.c: Regenerated.
	* features/nios2.c: Regenerated.
Fix code format issues gdb.base/macscp.exp

When I do something else, I find code format in gdb.base/macscp.exp is
messy.  This patch is to fix various code format issues in it.

Pushed as it is obvious.

gdb/testsuite:

2014-03-26  Yao Qi  <yao@codesourcery.com>

	* gdb.base/macscp.exp: Fix code format issues.