testOptimizedInterleavePatterns

Hi, after adding the files missing from the tarball I'm able to get 
further into the tests...

I'm now getting the following (on SunOS 5.11 i386 (32bit) pkgsrc gcc47)

> =======
> Running testOptimizedInterleavePatterns
> Testing SSE optimisation with different interleave patterns (large images) ...
>  0, 0: RGBHalf read as RGBHalf...                            OK OPTIMISED
>  0, 1: RGBHalf read as RGBAHalf...                           OK OPTIMISED
>  0, 2: RGBHalf read as ABGRHalf...                           OK
>  0, 3: RGBHalf read as RGBFloat...
>
> error reading back channel B pixel 96,-81 got -NaN expected -NaN
> Assertion failed: writtenHalf.bits()==readHalf.bits(), file testOptimizedInterleavePatterns.cpp, line 238, function compare
> Abort (core dumped)
> FAIL: IlmImfTest

sort of green on where to start debugging, but first I'm curious to know 
if the issue be in the library or perhaps in the test program...

thanks for any suggestions