Use %getncpus for %_smp_mflags and %_lto_cflags to make them affinity…

…-aware

Making %_smp_mflags affinity-aware was requested long, long ago in
https://bugzilla.redhat.com/show_bug.cgi?id=891588 but somewhere along
it fell in the cracks between distro versions...

platform.in

@@ -52,7 +52,7 @@
 #%_smp_ncpus_max 0
 
 %_smp_build_ncpus %([ -z "$RPM_BUILD_NCPUS" ] \\\
-	&& RPM_BUILD_NCPUS="`/usr/bin/getconf _NPROCESSORS_ONLN`"; \\\
+	&& RPM_BUILD_NCPUS="%{getncpus}"; \\\
         ncpus_max=%{?_smp_ncpus_max}; \\\
         if [ -n "$ncpus_max" ] && [ "$ncpus_max" -gt 0 ] && [ "$RPM_BUILD_NCPUS" -gt "$ncpus_max" ]; then RPM_BUILD_NCPUS="$ncpus_max"; fi; \\\
         echo "$RPM_BUILD_NCPUS";)