pull: grab wlock during pull
because pull might move bookmarks and bookmark are protected by wlock, we have
to grab wlock for pull :-(
This required a small upgrade of the 'lockdelay' extension used by
'test-clone.t' because the delay must apply to a single lock only.
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
}