Log Message:
sysutils/mtools: update to 4.0.43

v4_0_43
	- Fix root directory test in mattrib
	- -b BiosDisk flag for mformat to allow setting physdrive to
          a user-specified value
	- Clearer error message in mformat when trying to mformat a
          disk whose total size is not known
	- Make recursive copy more consistent
	- Trailing slash now always implies target should be a directory
	- Code cleanup
v4_0_42
	- Added postcmd attribute in drive description to allow to
          execute "device release" code automatically at end of
          command
	- Code cleanup (unneeded functions, initializations, added
          comments to unobvious code, obsolete stuff in Makefile)
	- signedness cleanup about directory entries
v4_0_41
	- Made it possible again to have FAT32 filesystems with less
	than 0xfff5 clusters
	- Make FAT32 entries 0 and 1 match what windows 10 does
	- Misc source code and configure script cleanup

v4_0_40
	- Remove libbsd dependency
	- Better compatibility with legacy platforms such as AT&T UnixPC
	- Upgraded to autoconf 2.71
v4_0_39
	- Rename strtoi to strosi (string to signed int). The strtoi
          function on BSD does something else (returns an intmax, not
          an int)