support reading DMG with standard disk layout.

[iradization]

HI,

Some dmg files doesn't contain the dmg 'koly' header at trailing 512 byes of the file (like those created with hdiutil).

when trying to extract such dmg file using libdmg I got : error: readUDIFResourceFile - signature incorrect

This format Is simply the disk layout, and it can be read from disk layout partition table (in my case, the partition is from GPT type)

does libdmg support this format ?