Update openexr commit again
Deal with NULL options

Options handle might be NULL if, for example, someone opens an ancient
project made with CS3 before the AEIO plug-in began.
Update to latest EXR stuff
Little build fix
Bump version to 1.9b1
Overwrite the timestamp made by lcms

We want like profiles to match, so we'll stick our own date in there.
Start threads later

It's a small thing, but this way the IlmBase threads won't get created
unless someone actually opens an EXR file. Later calls to set the same
number of threads won't use any significant processing time (i.e. the
threads won't be destroyed and re-created).
Ignore all Adobe SDKs
Merge branch 'master' into 32bit