UI: Fix trim functionality based on revised parameters to voglreplay
* Now have to specify that voglreplay will be used in "replay" mode.
Merge branch 'master' of https://github.com/ValveSoftware/vogl
UI: VertexArrayExplorer now supports per-instance data
* A second table has been to the lower half of the explorer (only visible if per-instance data is being used)
* Instance count and baseInstance can be adjusted by the user for visualization purposes
* Updated parameter for baseVertex to reflect that it should be an int and not uint
* Added gl*BaseInstance draw calls to be able to update the UI (Note that these are GL4.x features and vogl may not yet fully support them)
* Added additional draw calls that will need to be handled by the UI to the TODO list
Add vogltest back in.:
Merge branch 'master' of https://github.com/ValveSoftware/vogl into voglbench_sdl2_port

Conflicts:
	CMakeLists.txt