* configure.ac: Use "Guix", not "guix", as the package name.

* guix-build.in: New file.

* configure.ac: Emit `guix-build'.  Add `commands-exec'.
* Makefile.am (bin_SCRIPTS): New variable.
* po/POTFILES.in: Add `guix-build.in'.

* Makefile.am (EXTRA_DIST): Add `build-aux/config.rpath'.
  (SUBDIRS, ACLOCAL_AMFLAGS): New variables.

* configure.ac: Use `AM_GNU_GETTEXT'.  Emit `po/Makefile.in'.

* po/Makevars, po/POTFILES.in: New files.

* Makefile.am (.scm.go): Pass `--target=$(host)'.

* configure.ac: Use `AC_CANONICAL_HOST'.

* configure.ac, Makefile.am: New files.