This patch makes it possible for the user to select all supported compression types in OpenEXR 2.2 Discussion points: - B44 is only defined for half's it compresses to a fixed representation of 44% of the halfs. We do currently not reflect in the UI that in the case of float32's it will be equal to compression = NONE - ZIPS is single scanline zip and is supposed to be useful in cases where importing in Nuke happens. - The new Dreamworks formats, are the worth exposing etc etc Reviewers: campbellbarton, sergey Reviewed By: sergey Projects: #bf_blender Differential Revision: https://developer.blender.org/D1050