enhanced Output curves within the Vray HDRI Loader

[samuel_bubat]

Similar to the max curves with more features.

Load and save curves from a preset file.
A detachable window to enlarge it for fine adjustments.
The max window is so damn small it´s sometimes really a pain to fine adjust curves.
Maybe an option to switch between different color modes, for example HLS like the curves in digital fusion.
Full Script Access.

[Dave_Wortley]

Should be a separate map not part of the HDRI loader.