* Interface.h: ensure that functions in the interface are not exported by other header files.
This is generally harmless, except for the presence of default arguments, in which case the version with default arguments must come first.
To avoid the issue, these functions are only ever exported in the Interface.h header file.
1. Newer VC runtime stat(), when using 32-bit file size, returns error
if file size is >2G. For file existence check, using 64-bit file
size is more accurate as files bigger than 2G would be reported as
non-existing otherwise.
2. <sys/stat.h> is required for VS2013 or before.
. Split AppleWin -> Core with the functionality really needed by the emulator.
. Split AppleWin -> Utilities for generic code not called by other emulator components.
. Split AppleWin -> CmdLine for the command line option parsing.
