make-ca non-usrmerge fix

system/base/make-ca/make-ca.sysconf

@@ -1,4 +1,6 @@
 #!/bin/sh
-mkdir -p /etc/ssl/local
-mkdir -p /etc/ssl/certs
-/usr/sbin/make-ca -g
+if [ ! -d /etc/ssl/local ] ; then
+    mkdir -p /etc/ssl/local
+    mkdir -p /etc/ssl/certs
+    /usr/sbin/make-ca -g
+fi