fix handling of files of unsupported type in the walk code
if a file was of unsupported type, it was considered as 'seen' while
walking. this way it was possible to have file in the dirstate not
yielded by the walk function.
#!/bin/shmkdir tcd thg initecho a > ahg add ahg commit -m test -d "0 0"hg historyhg manifesthg cat ahg verify