* SD.open() new feature for creating all folders in path
This PR adds to the SD.open() function option to create all folders to the file.
SD.open(const char* path, const char* mode, const bool create)
Default value of create is false.
When true folders are created.
From issue #5019
* Update vfs_api.cpp
memccpy -> memcpy
* File f = open() edit
added false for create
- File might not eval to false if opened with write/append and SD is gone
- Allow card to be formatted if FAT partition was not found
- Mark card as gone in certain situations
- Fix several logic errors in low level SD API
