OpenEXR-1.4.x update

[Rex Dieter]

FYI, I plan on updating to OpenEXR-1.4.0 soon (see bug #201841), so just 
a heads up to those currently with OpenEXR dependencies(*), this new 
release is not ABI compatible.

-- Rex

(*)
on fc5 box,
$ repoquery --whatrequires  \
   OpenEXR libIex.so.2 libImath.so.2 libIlmImf.so.2 libHalf.so.2
returned:

blender
fyre
k3d
kdegraphics-extras
koffice