* FileSystemIDandChk/Main.cs:
	  partitionOffset should be the sector, not the byte

	* FileSystemIDandChk/PartPlugins/MBR.cs:
	  Corrected typos on field offsets

	* FileSystemIDandChk/Plugins/FAT.cs:
	* FileSystemIDandChk/Plugins/ISO9660.cs:
	  Corrected typo

	* FileSystemIDandChk/Plugins/ext2FS.cs:
	  Superblock block_size is shift of base block size (1024
	  bytes)
Documents Acorn ADFS.