Fusee: Decrypt all keyblobs during key derivation.

Simplify package1_get_encrypted_package1

Fix package1_read_and_parse_boot0 ...

Key derivation is now working

Fix TSEC key fetching, thanks to @rajkosto

Fix tsec.c (thanks @rajkosto @tslater2006), fixes #106

Fix diskio.c, etc.

Remove stray debug printf in gpt.c

┬┴┬┴┤( ͡° ͜ʖ‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌├┬┴┬┴

[stage2] Invert a few checks

Fix typo in nxboot.c

Finish writing stratosphere_get_ini1

Write more code for stratosphere_get_ini1, make it and its caller take target_firmware

Write more of stratosphere_get_ini1

Embed exosphere, thermosphere, loader, pm, sm into fusee-secondary ...

Still needs boot and boot2 to be built as proper KIPs

Make a top-level make build everything in order

Fix strncpy bugs in fusée, etc.

Make loadlist empty when booting Horizon, more nxboot.c code

Write all the needed pk1 code and a large part of the nxboot function

[stage2] Add debug printf in main.c

[stage2] Add dump_to_file

Rename sd_utils to fs_utils, etc

[stage2] Support sector sizes up to 4K in FatFs. ...

Note: SD cards always have a sector size of 512 bytes.

[stage2] Implement disk_status

Redesign fs_dev, raw_dev, introducing device_partition and switch_fs. ...

In theory, one could mount an encrypted FAT partition itself coming from a disk image, etc.

[stage2] Add console_get_framebuffer

[stage1] refactor diskio.c

[stage2] Accomodate raw_mmc_dev to latest sdmmc driver changes

stage1 -> stage2 again

[stage1] unstub multiple sector-r/w code

fusee: undo a silly mistake in longer-than-8K operations