Add support for fast path i386 call stack tracing
Merge branch 'master' of https://github.com/ValveSoftware/vogl
UI: Add support for the indexed variant of GL_BLEND
* Also initialize the underlying iVals, fVals, and bVals buffers
UI: Update vogleditor_output so that it can be used from other files without having to be initialized
* The global object needed to be marked as extern and instantiated in the implemention file.
* Also fixed up the formatting of errors and warnings
UI: vogleditor_tracereplayer now outputs messages regarding success of replaying the in-memory trace and taking snapshots
* NOTE: GL errors / warnings that vogl detects during the replay are not yet redirected back to vogleditor
* The tracereplayer now has better return values to indicate the difference between an error, the user closing the replay window, a successful snapshot, and a successful replay.
Merge branch 'master' of https://github.com/ValveSoftware/vogl