move some files without external dependencies from dldfcn to corefcn * __dsearchn__.cc, __ichol__.cc, __ilu__.cc, tsearch.cc: Move from dldfcn to corefcn directory. Use DEFUN instead of DEFUN_DLD. * libinterp/corefcn/module.mk, libinterp/dldfcn/module-files: Update.

#!/bin/sh
#
# Like mv $1 $2, but if the files are the same, just delete $1.
# Status is 0 if $2 is changed, 1 otherwise.

if test -r $2; then
  if cmp $1 $2 > /dev/null; then
    echo $2 is unchanged
    rm -f $1
  else
    mv -f $1 $2
  fi
else
  mv -f $1 $2
fi