CD-RW packet writing/formatting support

[lorenzo]

Libburn should be able to format a CD-RW for packet writing. Since actually writing a filesystem on such a formatted disc is usually best done via the /dev/pktcdvd* devices and standard filesystem creation tools, libburn may or may not need to actually create a UDF filesystem onto the disc, but the disc should be formatted and prepared for use with the pktcdvd devices. Note, however, that at this time, Linux seems to be the only OS that natively supports mounting discs formatted in this way as writable. Windows will do it with a 3rd-party driver. Not sure about other OS's. In this case, libburn should probably be able to add and remove files from these discs if possible.

[scdbackup]

My work on formatting DVD-RW brought me near to CD-RW (MRW) formatting.

It should not be difficult to instigate a format 00h ("Full") but i do not have any use case for such a media. A tester and a test scenario would be needed to make such a formatting function senseful. Give me a note, eventually.