Automake migration - initial commit

    Removed some Makefiles from the old build system
    - Remove Makefile.*, except Makefile.in which is moved into Makefile.am
    - Remove src/libs/gnulib
    - Remove various helper scripts
    - remove src/include/config.hin

    Gnulib support
    - Added bootstrap facilities from gnulib
    - git submodule add git://git.sv.gnu.org/gnulib.git
      this added gnulib in .git/index and created an empty gnulib
    - gnulib m4 dir moved to gnulib_m4

    Automake support
    - moved Makefile.in to Makefile.am
    - move aclocal.m4 to acinclude.m4
    - Makefile in non-recursive style
    - Compilation OK
    - Installation mostly OK, except the doc