Command line option parsing issues

[JamesRumble-IMG]

I noticed that the set of command line arguments we were previously no longer work properly (prior version we are using f5b1b7f)

The following command line arguments previously worked:
Vulkan-Samples/vulkan_samples --benchmark --stop-after-frame 100 --force-close sample multithreading_render_passes

Now it seems sample must be first with --benchmark --stop-after-frame 100 --force-close coming after the sample name.
I couldn't see any changes to the --help option to explain this. Is this expected behaviour?

While checking this I also noticed that incorrectly specifying --stop-after-frame 100 as --stop-after-frame=100 causes a segfault on

Vulkan-Samples/framework/platform/platform.cpp

Line 130 in 19c2432

else if (optionIt->second->handle_option(argumentDeque))

. The command line argument is obviously wrong but I'd imagine the app shouldn't segfault.