Added static CCITT-CRC16 lookup table.
	Subchannel Q is big-endian.
	Detect if a CD-Text pack is really a CD-Text pack to not
	confuse with CD+G packs.
	An audio disc can have subchannel correct but channel null.
	Viceversa can happen. Those should be considered correct and
	not unknown.
	Implement standard CD subchannel packets.
	* DiscImageChef/DiscImageChef.csproj:
	* DiscImageChef/Checksums/ReedSolomon.cs:
	  Added ReedSolomon code.

	* DiscImageChef/Checksums/CDChecksums.cs:
	  Detect pack mode+item and if in debug show it.
	Empty list cannot be called Contains() it seems, appears as
	null.
	Correct typo
	Workaround when HFS and Apple Partition Map where created on a
	512 byte/sector device (like a HDD) but are present on a 2048
	byte/sector device (like a CD). Solves #1. HFS+ should not be
	affected (even if wrapped).
	Bump version to 2.2