* src/meta/array.hh, src/meta/array.hxx: Remove (obsolete).
	* src/meta/array1d.hh, src/meta/array1d.hxx,
	src/meta/array2d.hh, src/meta/array2d.hxx,
	src/meta/array3d.hh, src/meta/array3d.hxx,
	src/meta/array.hh, src/meta/arraynd.hh: Add.
	* src/Makefile.am (nobase_oln_HEADERS): Remove meta/array.hh,
	meta/array.hxx. Add meta/array1d.hh, meta/array1d.hxx,
	meta/array2d.hh, meta/array2d.hxx, meta/array3d.hh, meta/array3d.hxx,
	meta/array.hh, meta/arraynd.hh.
	* src/meta/basics.hh: New function logical_or and logical_and.
	* src/core/internal/objs.hxx: Define new class _pbrk for 3D arrays.
	* src/core/objs.hh: Instantiate such an object.

	* src/core/w_window2d.hh: Adapt the constructor with the new
	syntax of the array.
	* src/value/vec.hh: Likewise.

    prcs2git-id: 0_4.19