Consistent naming of subnational flags

[shankarsivarajan]

Some subnational flags have two hyphenated two letter codes, like cn-xj (China, Xinjiang) and in-ka (India, Karnataka), while others which are prima facie very similar, have standalone codes, either abbreviated like hk (Hong Kong) or spelled out in full like mizoram (Mizoram), instead of cn-hk (China, Hong Kong) and in-mz (India, Mizoram).
EDIT: I have since learned that the relevant standard is ISO 3166-2.

[HatScripts]

Thanks for pointing these out. If there are any other inconsistencies, please let me know.

• Renamed mizoram.svg to in-mz.svg (5797a96)
• Created cn-hk.svg symlink pointing to hk.svg (b9b64f2)

[shankarsivarajan]

More in China and India, but some more dubiously so.
manipur rename to in-mn (India, Manipur).
tibet and taiwan: add symlinks cn-xz (China, Xizang Zizhiqu) and cn-tw (China, Taiwan).
malayali: add a symlink in-kl for (India, Kerala).

[shankarsivarajan]

Proposal: add a symlink iq-kr pointing to kurdistan, or vice versa.

[HatScripts]

• Renamed manipur.svg to in-mn.svg (c8c261a)
• Renamed kurdistan.svg to iq-kr.svg (7e62b64)

[shankarsivarajan]

Macao: add a symlink cn-mo pointing to mo.