af83fa703c
Remove bogus targets. Allocate partition letters as follows: lowest offset "flags & CHUNK_IS_ROOT" gets 'a', lowest offset "subtype==FS_SWAP" gets 'b' the rest is allocated in offset order from this sequence "defghab". This will generally make sense. Added rules to complain if more than one CHUNK_IS_ROOT or more than one FS_SWAP per FreeBSD chunk. Set CHUNK_IS_ROOT on the 'a' partition in Open_Disk. Run Fixup_Names in Open_Disk.