Features include new graphs to compare runtime of functions and runtimes
across reports, as well as new profiling functions that only profile
spikes.
This was SVN commit r18423.
* separate the HTTP profiling server from the on-screen profiler
* allow shutting down the HTTP profiler
* print messages when enabling/disabling HTTP and GPU profilers
Patch by kingbasil, fixes#1862
This was SVN commit r15723.