Blender Git Loki

Sequencer Proxy: image sequence in a working state

Tested: mono, top-bottom and individual views (_L, _R) image sequences

We are creating a proxy file for each individual view, even when the
image is 3D encoded (e.g., a top-bottom image will generate 2 proxy
files).

On-going Development Notes:

1) 3D Movies relying on individual files (_R, _L) are not generating the
proxies correctly at the moment (probably due to name clashing and the
fact that movie names are handled depth inside the code - which is a
known cause for another issue to be fixed when the user tries to export
a movie animation in the Invidual Views mode).

2) At the moment we are looping over all possible available views,
instead of getting from the current Sequencer. We should probably change
that.