Port to latest gnulib. There were a lot of changes, so the

simplest way to get this up and running was to switch to coreutils
bootstrap procedure.  I noticed one feature missing after this
merge: the ability to update a single .po file.  I can add that
later if need be.
* README-cvs, bootstrap.conf: New files.
* lib/.cvsignore: Remove Makefile.am, printf-parse.c, vasnprintf.c.
* lib/printf-parse.c, lib/vasnprintf.c: New files, from coreutils,
to override gnulib, so that we don't need xsize.h.
* bootstrap: Replace with coreutils bootstrap, except add support
for paxutils.
* configure.ac (gl_USE_SYSTEM_EXTENSIONS): Remove, as gl_EARLY now
does this.
(gl_EARLY, gl_INIT): Add.
(tar_GNULIB): Remove.
* gnulib.modules: Add configmake.
* lib/Makefile.tmpl: Remove, replacing with....
* lib/Makefile.am: New file.
* src/Makefile.am (tar.o): Remove dependency: Automake does this
for us.
* src/tar.c: Include <configmake.h> and <rmt-command.h>, not
<localedir.h>.