[patch] compile/*.c: Use do-xfail-if.

[Mark Mitchell]

> Is there a convenient way of entirely disabling a compile/ testcase on
> one platform, something like the following .x?

Not too easily...  We're trying to avoid explicit use of Tcl.

You can XFAIL it for an entire target of course.

-- 
Mark Mitchell
CodeSourcery, LLC
mark@codesourcery.com