fallback to floor function when rint function is not available.

fallback to floor function when rint function is not available.

2008-05-21  Jan Heller  <jheller@svn.gnome.org>

        * babl/babl-internal.h:
        * babl/base/type-u16.c:
        * babl/base/type-u32.c:
        * babl/base/type-u8.c:
        * extensions/CIE-Lab.c:
        * extensions/gegl-fixups.c:
        * extensions/gggl-lies.c:
        * extensions/gggl.c:
        * extensions/gimp-8bit.c:
        * extensions/util.h: fallback to floor function when rint function
        is not available.

        * configure.ac: added check for rint function.

svn path=/trunk/; revision=313