Make turning off configchecks an official ---with option

Fedora does some validation on config options to catch
errors. There may be cases when we want to turn off that
checking because it doesn't actually matter. Make this a
full --with option to make it easier to turn off.

kernel.spec

@@ -149,6 +149,11 @@ Summary: The Linux kernel
 # verbose build, i.e. no silent rules and V=1
 %define with_verbose %{?_with_verbose:        1} %{?!_with_verbose:      0}
 
+#
+# check for mismatched config options
+%define with_configchecks %{?_without_configchecks:        0} %{?!_without_configchecks:        1}
+
+#
 # gcov support
 %define with_gcov %{?_with_gcov: 1} %{?!_with_gcov: 0}
 
@@ -400,11 +405,7 @@ Summary: The Linux kernel
 # Should make listnewconfig fail if there's config options
 # printed out?
 %if %{nopatches}
-%define listnewconfig_fail 0
-%define configmismatch_fail 0
-%else
-%define listnewconfig_fail 1
-%define configmismatch_fail 1
+%define with_configchecks 0
 %endif
 
 # To temporarily exclude an architecture from being built, add it to
@@ -1261,11 +1262,12 @@ done
 
 cp %{SOURCE42} .
 OPTS=""
-%if %{listnewconfig_fail}
-	OPTS="$OPTS -n"
+%if %{with_configchecks}
+%if 0%{?fedora}
+	OPTS="$OPTS -n -c"
+%else
+	OPTS="$OPTS -w -n -c"
 %endif
-%if %{configmismatch_fail}
-	OPTS="$OPTS -c"
 %endif
 ./process_configs.sh $OPTS kernel %{rpmversion}