Part of D3934: VSE cache with frame prefetching (WIP) and a basis for prefetching
- fix T49589: 2.78 VSE no longer caching Node Editor scene strips
- fix T59964: Crash rendering text strip with Camera marker bind
there are few changes to D3934: VSE cache with frame prefetching (WIP)
- removed some unnecessary code
- induvidual cache settings for sequences
- toggle for memview to show cost
- prefetch/store ratio replaced with direct min cost property.
- prefetch/store ratio behavior felt unnatural to me.
- Would have to edit some video to test how this works