* Add FatFs
* enable BUILD_FATFS for all-module build
* push vfs into rest of firmware
* align maximum filename length
* increase timeout for acmd41 during card initialization
* switch from DOS to Unix path semantics chdrive() is substituted by chdir()
* update to fatfs R.012a incl. patches 1-6
* add callback for rtc provisioning in file
* update docs
AFAIK no one uses the wifi.startsmart() and wifi.stopsmart(). Removing
them frees up an extra 20-25K of Flash to use as filesystem. So I have
added a new config define WIFI_SMART_ENABLE which is enabled by default
so the default functionality is the same, but if this is commented out
then this code is omitted.
I have also removed wofs and upgrade from this build as we no longer
support these.