Fix bootstrap.conf when no paxutils

* bootstrap.conf: Don’t assume the paxutils subdirectory already
exists, when bootstrapping.

bootstrap.conf

@@ -69,8 +69,10 @@ bootstrap_post_pull_hook() {
 PAXUTILS=paxutils
 
 # gnulib modules used by this package.
+# getopt-gnu is for paxutils.
 gnulib_modules="$avoided_gnulib_modules
-`grep -h '^[^#]' gnulib.modules $PAXUTILS/gnulib.modules`
+`grep -h '^[^#]' gnulib.modules`
+getopt-gnu
 "
 
 # copy_files srcdir dstdir