I just tried "git-add -u ." and it *does* detect deleted files.
$ git-status
# On branch master
nothing to commit (working directory clean)
$ rm oldfile
$ git-status
# On branch master
# Changed but not updated:
# (use "git add/rm <file>..." to update what will be committed)
#
# deleted: oldfile
#
no changes added to commit (use "git add" and/or "git commit -a")
$ git-add -u .
$ git-status
# On branch master
# Changes to be committed:
# (use "git reset HEAD <file>..." to unstage)
#
# deleted: oldfile
#
$ git-commit
Created commit 17e2bba: delete
1 files changed, 0 insertions(+), 1 deletions(-)
delete mode 100644 oldfile
So, it works exactly as "git-commit -a" in this case.
Dmitry