re PR fortran/46416 (libquadmath: missing functions)

re PR fortran/46416 (libquadmath: missing functions)

	PR fortran/46416
	* quadmath.h (cbrtq, finiteq, isnanq, signbitq, sqrtq): Remove
	const from prototype argument.
	(cimagq, conjq, cprojq, crealq, fdimq, fmaxq, fminq, ilogbq,
	llrintq, log2q, lrintq, nearbyintq, remquoq): New prototypes.
	(__quadmath_extern_inline): Define.
	(cimagq, conjq, crealq): New inlines.
	* Makefile.am (libquadmath_la_SOURCES): Add math/cimagq.c,
	math/conjq.c, math/cprojq.c, math/crealq.c, math/fdimq.c,
	math/fmaxq.c, math/fminq.c, math/ilogbq.c, math/llrintq.c,
	math/log2q.c, math/lrintq.c, math/nearbyintq.c and math/remquoq.c.
	* Makefile.in: Regenerated.
	* quadmath_weak.h (cimagq, conjq, cprojq, crealq, fdimq, fmaxq,
	fminq, ilogbq, llrintq, log2q, lrintq, nearbyintq, remquoq): Add.
	* quadmath-imp.h (__LITTLE_ENDIAN__): Don't define.
	(ieee854_float128): Use __BYTE_ORDER == __ORDER_BIG_ENDIAN__
	tests instead of __BIG_ENDIAN__.
	* quadmath.map (QUADMATH_1.0): Add cimagq, conjq, cprojq, crealq,
	fdimq, fmaxq, fminq, ilogbq, llrintq, log2q, lrintq, nearbyintq
	and remquoq.
	* libquadmath.texi (cimagq, conjq, cprojq, crealq, fdimq, fmaxq,
	fminq, ilogbq, llrintq, log2q, lrintq, nearbyintq, remquoq): Add.
	* math/cprojq.c: New file.
	* math/ilogbq.c: New file.
	* math/fminq.c: New file.
	* math/llrintq.c: New file.
	* math/log2q.c: New file.
	* math/lrintq.c: New file.
	* math/crealq.c: New file.
	* math/nearbyintq.c: New file.
	* math/fmaxq.c: New file.
	* math/conjq.c: New file.
	* math/remquoq.c: New file.
	* math/cimagq.c: New file.
	* math/fdimq.c: New file.

	* math/ldexpq.c: Include errno.h.  Set errno to ERANGE if needed.

From-SVN: r168854