gcore test failures

[Michael Snyder]

Daniel Jacobowitz wrote:
> 
> Michael, when you backed out the FPXREGS stuff, a restore register test
> started failing.  Could you update the test, please?

Unfortunately, without the FPXREGS stuff, it is a legitimate failure.
Even the general "info register" display on i386 linux includes
the FPX regs.  Perhaps that is a bug -- floating point regs are
only supposed to be displayed by "info all-registers".