Log Message:
Changes 3.9.10:
* Support for multiple drives in floppyd
* Updated .spec file
* Fixed some long name directory entry freeing bugs
* Fixed duplicate FAT writing error. Fixed segfault on short images.
* Mformat creates images of correct size.
* CYGWIN compatibility (O_BINARY flag).
* Cygwin patch for plain_io.c (no locking)
* Fix a couple of memory leaks in config file parsing. Fix llong.h
  (redefined same symbol twice)
* Fix a variable initialization problem in plain_io.c
* New mclasserase command to erase memory cards
  C99 "compatibility" (cf http://www.mtools.linux.lu/download.html)
* Fix rootskip and rate of XDF disks
* Fix inverted IS_MFORMAT_ONLY conditon in plain_io.c
* Moved putc after variable description (anybody knows about a -W
  flag so that gcc warns about these?)
* Fixed mattrib -p (missing slash)
* Added -m option to mformat to specify a non-standard mediabyte
* Added -d options to mformat to specify number of FAT copies. Can
  also be set using the MTOOLS_NFATS environmental variable.