* Makefile.am (libquadmath_la_SOURCES): Add math/logbq.c. * Makefile.in: Regenerate. * libquadmath.texi: Document logbq. * quadmath.h: Add logbq prototype. * quadmath.map: Add logbq. * quadmath_weak.h: Add logbq prototype. * math/logbq.c: New file From-SVN: r226748