setup: detect statfs
statfs is not defined by POSIX but is available in various systems to help
decide filesystem type. Let's detect it and set the macro HAVE_STATFS.
fixbundle() {
grep -v 'saving bundle' | grep -v 'saved backup' | \
grep -v added | grep -v adding | \
grep -v "unable to find 'e' for patching" | \
grep -v "e: No such file or directory" | \
cat
}