Use fcntl.h for ESP32

Fix FatFile::printName() bug

Support for SdFatLite library.

Add openCwd(), fix library.properties for Particle

Partivle SPI fix, ls returns bool

Improved card re-initialization

Avoid MISO missing pull-up problem

Fix iinitialization for older cards

Particle Gen3 support with POSIX open flags

Fix allocation algorithm