Fix -fprofile-use warnings/errors.

[Phil Muldoon]

Phil Muldoon <pmuldoon@redhat.com> writes:

> This patch corrects (and in some cases, appeases) compiler warnings
> generated through the use of -fprofile-use.  We've had a variant patch
> for sometime in the Fedora GDB.  This updates HEAD.

And just as soon as I post the patch I realize some of the profile data
was stale.  Sorry for the noise, but I will post another (larger) patch
very shortly.

Cheers,

Phil