Also get files from history inside the list.
Fix deleted files not appearing anymore in the fake starteam.

The files was not listed properly in the folder which cause the import to
miss some files during history importation.
Fixed a weird typo I've made with the sconstruct file comment.
Optimize the parent lookup in fake-starteam folders.

Most of the time it is not even needed to lookup the parent. Only in some
case where we load up a file from the recycleBin.
Be more verbose in the exception message.
Fallback on the file description on the first content revision

This only when there is no comment on the first revision.