gnulib-tool: fix autoreconf invocation

[Bruno Haible]

Currently, a megatestdir will, during the first "./configure; make",
rebuild config.h, requiring autoconf and automake in the PATH. This fixes it.


        * gnulib-tool (func_create_megatestdir): Call autoreconf without the
        option --force, because --force causes the aclocal.m4 of each
        subdirectory to be newer than the corresponding config.h.in.

*** gnulib-tool.bak     2005-08-25 01:37:21.000000000 +0200
--- gnulib-tool 2005-08-25 02:05:40.000000000 +0200
***************
*** 934,941 ****
  
    # Create autogenerated files.
    (cd "$megatestdir"
!    echo "executing ${AUTORECONF} --force --install"
!    ${AUTORECONF} --force --install
    )
  }
  
--- 934,941 ----
  
    # Create autogenerated files.
    (cd "$megatestdir"
!    echo "executing ${AUTORECONF} --install"
!    ${AUTORECONF} --install
    )
  }