On the Windows x86 platform we saw a large performance degradation when using multiple threads for the generate_breakpad_symbols target. If we run it single threaded instead it runs in less than two minutes vs. over two hours multi-threaded. Also add elapsed time taken for each symbol file generated. Python GIL info has been added to the [devops wiki](https://github.com/brave/devops/wiki/Python-GIL). Fixes: https://github.com/brave/devops/issues/889