[libgfortran] Builtin functions allocate their results (library part)

[Victor Leikehman]

Oops forgot to include ChangeLog entry:

2004-08-04  Victor Leikehman  <lei@il.ibm.com>

	* libgfortran.h (array_t, size0) New declarations.
	* m4/ifunction.m4, m4/transpose.m4, intrinsics/cshift0.c: Allocate
	space if return value descriptor has NULL in its data field,
        and initialize bounds and stride.
	* intrinsics/size.c (array_t, size0): Declarations moved to
	libgfortran.h.
	* generated/*.c: Regenerated