Bug: overflow on max projection of EMD

[jamoore]

From Ingvar using 4.3.3 (​http://lists.openmicroscopy.org.uk/pipermail/ome-users/2013-June/003780.html):

On an EM volume that contains more than 2^{31 data points, I get an error when attempting to do "Max Intensity" in the OMERO.web image viewer. The error message in OMEROweb.log and OMEROweb_request.log indicate that the cause is an overflow in an integer index in Java. Assuming that the index points into a Java array, then there may be a bigger problem, as Java arrays in the standard Oracle implementation is limited to MAX_INTEGER - 8 (or some other small offset depending on who you believe).}

Exception on 4.4.8 merge build (Howe):

    return _M_omero.api.RenderingEngine._op_renderProjectedCompressed.invoke(self, ((algorithm, timepoint, stepping, start, end), _
ctx))

ApiUsageException: exception ::omero::ApiUsageException
{
    serverStackTrace = ome.conditions.ApiUsageException: Converting Long 2958160230 to Integer is an overflow.
        at ome.io.nio.RomioPixelBuffer.safeLongToInteger(RomioPixelBuffer.java:121)
        at ome.io.nio.RomioPixelBuffer.getStack(RomioPixelBuffer.java:572)
        at ome.services.projection.ProjectionBean.projectStack(ProjectionBean.java:114)
        at ome.services.RenderingBean$9.doWork(RenderingBean.java:1802)
...
        at ome.services.util.Executor$Impl.execute(Executor.java:350)
        at ome.services.RenderingBean.projectStack(RenderingBean.java:1798)
        at ome.services.RenderingBean.renderProjectedAsPackedInt(RenderingBean.java:585)
        at ome.services.RenderingBean.renderProjectedCompressed(RenderingBean.java:629)