size_t should be 64-bits on a 64-bit machine. mmsize_t should be 32-bits (unless CONFIG_MM_SMALL is selected).  This commit backs out the last change to stddef.h

stddef.h:  Use a round-about cast in the definition of offsetof() to avoid warnings on machines with 64 bit addresses and when size_t is less than 64-bits.

mksmartfs:  Remove fs/smartfs/fs_mksmartfs.c and related headers.  This has been moved to apps/fsutils/mksmartfs.  From Ken Petit

Revert "Add option to specify logical sector size during low level format plus adds some run-time geometry tests.  fs/smartfs: Remove the 'mksmartfs()' code from the kernel 'fs'"

This reverts commit 96faf0fa3251ca10a17daddc728d931be5a206e0.

Add option to specify logical sector size during low level format plus adds some run-time geometry tests.  fs/smartfs: Remove the 'mksmartfs()' code from the kernel 'fs'
  directory and build.

Fixed a mismatching between the drawlinewindow's prototype and it's implementation

open() has been extended.  You can now open block drivers and access them just as you can character drivers.  For example, you can hexdump a block device.

RTC: Fix system time initialization when using an exernal RTC.  Fix some bugs in the DS1307/DS3231 RTC driver

drivers/mtd/smart.c  Fixed SmartFS wear level error that occurs when the logical sector size is too small to save all wear level status bytes in a single sector.  Logical sectors 1 and 2 were simply not being allocated and then the read_sector and write_sector routines were failing.  From Ken Petit

stdio: Define BUFSIZ

stdlib: Fix forgotten FARs