Joseph Carter
Whitespace in a makefile is consequential. In fact, it's part of the syntax. And at least a few versions of make puke on Makefiles with lines indented with spaces, not tabs. Obviously GNU make used on Debianish systems is not strictly among them, or this would fail. Even so, I cannot resist the urge to pedantically fix this, if only to get rid of the bright syntax error red coloration in vim. :)
If the app is in landscape mode and the user presses the power button, a pause
is followed immediately by a surfaceChanged event because the lock screen
is shown in portrait mode. This triggers a "false" resume.
So, we just pause and resume following the onWindowFocusChanged events.
Also, wait for SDL_APP_WILLENTERBACKGROUND and SDL_APP_DIDENTERBACKGROUND before
blocking the event pump.
