RM: to -f or not to -f

[Patrick Welche]

I just tried configuring libxml2 which has

        AC_PATH_PROG(RM, rm, /bin/rm)

in its configure.in. After running configure

        rm: libtoolT: No such file or directory
        Done configuring

Probably from

        cfgfile="${ofile}T"
        trap "$RM \"$cfgfile\"; exit 1" 1 2 15
        $RM "$cfgfile"

in config.status which in turn seems to be from _LT_CONFIG in
libtool/libltdl/m4/libtool.m4.

So, the AC_PATH_PROG(RM, rm, /bin/rm) means that libtool's RM=rm -f if
RM wasn't defined yet doesn't happen.

Any thoughts? (just to get rid of an harmless error message)
(BTW, autoconf, automake, libtool and libxml2 all from today's head)

Cheers,

Patrick