libtool cvs rm -f ""

[Kevin Ryde]

Solaris 2.7 and HP-UX 10 don't think much of

        rm -f ""

it provokes a bit of an error

        rm: cannot remove `.' or `..'

This arises from libtool when compiling, I think due to $output_obj
being empty when -c -o works.

This is no more than cosmetic, but perhaps cases where that might
happen should have a 2>/dev/null or similar.

Bit silly really, the whole point of -f is to make rm shut up in the
first place.