Indigo Renderer 3.4.15 - Stable release candidate

[OnoSendai]

This is a stable release candidate for 3.4.15
If you spot any bugs or problems, please make a post about them in this thread.
Thanks!

Indigo for Windows 32-bit:
IndigoRenderer_3.4.15_Setup.exe

Indigo for Windows 64-bit:
IndigoRenderer_x64_3.4.15_Setup.exe

Indigo for Linux 32-bit:
IndigoRenderer_v3.4.15.tar.gz

Indigo for Linux 64-bit:
IndigoRenderer_x64_v3.4.15.tar.gz

Indigo for Mac OSX (10.5 - 10.7):
IndigoRenderer3.4.15.dmg


Indigo RT for Windows 32-bit:
IndigoRT_3.4.15_Setup.exe

Indigo RT for Windows 64-bit:
IndigoRT_x64_3.4.15_Setup.exe

Indigo RT for Linux 32-bit:
IndigoRT_v3.4.15.tar.gz

Indigo RT for Linux 64-bit:
IndigoRT_x64_v3.4.15.tar.gz

Indigo RT for Mac OSX (10.5 - 10.7):
IndigoRT3.4.15.dmg

Changelog:

3.4.15
* Fixed crash when changing a background material that was black to sun+sky.
* Made some core optimisations.

[Zom-B]

A quick 5min testrender (GPU PT) showed 3.4.15 to be 5% slower then v3.4.14...

[Zom-B]

Since we are heading just at a stable release, I would really love to see a random seed for the Objects in the render Q. maybe an extra line of code for the Q file?!
Waiting for this since end of last year, and its getting important for coming Projects for this fall...

please, please with sugar on top :)

[Zom-B]

another small issue:

activating PostPro AD causes Indigo to "pause" rendering and calculate the AD, but the samples/sec still get calculated for the time doing so... but since Indigo doesn't render it shouldn't!
Or maybe it would be possible to keep rendering with the other cores during AD calculation, since PostPro AD only uses 1 thread...