Restore ISO9660 support

[minexew]

Support for reading and writing ISO9660 has been removed from TOS recently.
There doesn't seem to be any good reason not to keep it in Shrine, therefore we should bring it back.

[nukeop]

It's a covenant with God, like circumcision.

God says...
what_have_you_done_for_me_lately earnest honesty Han_shot_first lying furious fun you're_not_all_there_are_you Shakespeare like_like a_likely_story yep wrath are_you_insane do_you_get_a_cookie rip_off no_more do_you_want_another mocking over_the_top you_don't_say on_the_otherhand I_love_you joy illogical wife It's_nice_being_God laziness desert I'm_bored whazza_matter_for_you Venus

[minexew]

You seem like a carefully trained CIA agent designated to play tricks on me.

If i put it back, will you die?