We previously disabled the hardened build macros because they broke
static linking. This is now resolved, so we can use them as is, which in
turn ensures ksmctl gets linked correctly.
While doing this it is not neccessary to pass -pie in ldflags, as we are
already giving the --enable-pie configure option. This lets us move
setting of linker/compiler flags into the common run_configure
function, rather than duplicating them for static & dynamic builds
Finally, even though QEMU sets _FORTIFY_SOURCE itself, there's no reason
to strip it from the RPM provided build flags - it is harmless for it to
appear twice on compiler args. This ensures ksmctl.c gets fortified.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
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