Fixed Bug 4883, redux - connect SDL_GetDisplayDPI to UIKit_GetDisplayDPI
iOS: fixed bug whereby some SDL testing apps weren't launching
Fix for Bug 5034 - Replugging in a controller crashes on macOS in SDL 2.0.12
Backout prior fix for Bug 5034, which needs more research
Fixed Bug 5034 - Replugging in a controller crashes on macOS in SDL 2.0.12
virtual joysticks: move variable decls to top of function (for C90 compat; Bug 5038)
virtual joysticks: add autotools-build support (Bug 5028)
virtual joysticks: MSVC support part 2/2, add file refs to MSVC projects (bug 5028)