[N64] Ocarina of Time Glitched Subscreen / Inventory

What we know:

• This bug affects unmodded roms and not romhacks simply because they have different SHA1 checksums. There's nothing special about the roms' contents.
• Normally, game-specific emulation hacks are enabled by flags in the gamedb, but there are some baked into the copy of Mupen64Plus' core distributed with BizHawk.
• We can't recompile the core right now.
• @steventylerseanherr has (unwittingly?) provided a workaround: change the rom slightly with a hex editor.

Original bug report follows.

The inventory screen is glitched for OOT such that when using GlideN64, the inventory screen is always white and when using Glide64mk2 it looks very broken. I suspect it has something to do with some sort of hard-coded Subscreen Delay Fix conflicting with the graphics plugins' framebuffer emulation since the inventory works fine in OOT Randomizer which isn't recognized as OOT and thus the delay fix isn't applied to it.

GlideN64 OOT

Glide64mk2 OOT

GlideN64 OOT Randomizer

Start by reproducing the unmodded Ocarina of Time inventory-screen failure with GlideN64 and Glide64mk2, then inspect the Mupen64Plus core, gamedb flags, and built-in Subscreen Delay Fix described in the report. The workaround and OOT Randomizer comparison provide reference cases; done means the inventory renders correctly without changing the ROM.