devtest 1.8

Cumulative changes since 1.7:

Fixed potential crash when -i argument is more than 8192 bytes and -d is specified.
Fixed data restore bug when -d is specified -- was writing corrupt data.
Fixed #5 - floppy drive motor remains on after tests.
Fixed bug where '-c motoroff' also attempted NSCMD_ETD_FORMAT64.
Fixed bug where '-g' command failed to determine correct geometry for floppy.
Fixed crash with devtest -g on a non-device (smashfs volume for example).
Fixed -i test bug where not all the test pattern buffer was being inverted.
Fixed -t to correctly fail on second iteration (caused by uninitialized variable).
Fixed bug where SCSI sense data from HD_SCSICMD was used after being deallocated.
Added display of memory flags when "-m - -v" is specified.
Added "-m zorro2" and "-m zorro3" to request a specific Zorro memory type.
Added -B ,<#tio> to allow specifying the transfer size to test and the number of simultaneous I/O (default 512k,4) up to 32 tio.
Added packet tests for CMD_UPDATE and CMD_CLEAR.
Improved devtest build across toolchains by fixing printf() width/precision arguments.
Made HD_SCSICMD requests use allocated storage type as specified by -m argument.
Updated documentation.