* frontend/drivers/platform_unix.c
(libretro_cheats_directory): New variable.
(frontend_unix_get_env): Set DEFAULT_DIR_CHEATS to the value of
the LIBRETRO_CHEATS_DIRECTORY environment variable, if available.
* frontend/drivers/platform_win32.c: Likewise.
* configuration.c (config_load_file)
<libretro_cheats_directory>: New variable. Use the values of
the LIBRETRO_CHEATS_DIRECTORY environment variables instead of their
corresponding configured values, when set.
* docs/retroarch.6: Document it.
* retroarch.c (retroarch_print_help): Extend help text.
* Partially revert a change made in 69ceb95ddc.
The change caused the 'libretro_directory' config option to always
revert to the default value, which was not intended behavior.
Reported-by: Michael Cook
* platform: Honor the LIBRETRO_DATABASE_DIRECTORY environment variable.
This is a follow-up to commit 69ceb95ddc.
* frontend/drivers/platform_unix.c
(libretro_database_directory): New variable.
(frontend_unix_get_env): Set DEFAULT_DIR_DATABASE to the value of
the LIBRETRO_DATABASE_DIRECTORY environment variable, if available.
* frontend/drivers/platform_win32.c: Likewise.
* configuration.c (config_load_file)
<libretro_database_directory>: New variable. Use the values of
the LIBRETRO_DATABASE_DIRECTORY environment variables instead of their
corresponding configured values, when set.
* docs/retroarch.6: Document.
* retroarch.c (retroarch_print_help): List supported environment
variables, and cross-reference the man page.
* Less string copies
* Some general cleanups
* Add extra param to runloop_message_queue_push so we can pass size_t
of the message
* Consistent conventions for local variable usage for certain things
* fixed audio drivers in RARCH_NETPLAY_CTL_USE_CORE_PACKET_INTERFACE
fixed audio problem with menu toggle with the new network fuction
* Fix type space
* Massive reduction in heap space allocation, going from settings struct
264kb to 119Kb
* Use NAME_MAX_LENGTH for base paths/names, etc
* Use DIR_MAX_LENGTH for directory sizes
When save state auto indexing is enabled, and maximum kept states
are limited, wrap around after reaching the configured maximum.
A gap in the indexing is used to keep track of most recent state.
If e.g. maximum kept amount is 5, then indexes 0..5 will be used,
if 3 is empty, most recent state is 2.
* iOS/tvOS: bundle cores as frameworks as opposed to dylibs
* iOS/tvOS: update plist to indicate controller support
* iOS/tvOS: living within the sandbox
* iOS/tvOS: import content through share sheet
* iOS/tvOS: default audio sync off due to crash on background
* iOS/tvOS: don't try altkit if there's no reason to
* iOS/tvOS: enumerate cores for appstore distribution
