1.4e pulls-in unwanted languages

Hi,

For some reason, libtool-1.4e pulls unwanted language checks into
configure scripts. 

eg. this simple configure.ac pulls in CXX and F77:

# cat configure.ac
AC_INIT([automake-bug],[5.0])
AC_PREREQ(2.57)
AC_CONFIG_SRCDIR(foo.c)
AM_INIT_AUTOMAKE([foreign 1.7.2b dist-bzip2])
AC_PROG_CC
AC_PROG_LIBTOOL
AC_CONFIG_FILES(Makefile)

# ./configure
..
checking for gcc... gcc
..
checking for g++... g++
..
checking for g77... g77
..

[The cdemo from libtool sources also exposes the same behavior.]

Ralf