Change toxencryptsave API to never overwrite pass keys.

[iphydf]

This change is 

[zetok]

Formatting could be perhaps improved, but aside from that public API looks fine.

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Review status: 0 of 4 files reviewed at latest revision, 1 unresolved discussion, some commit checks failed.

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toxencryptsave/toxencryptsave.h, line 244 at r1 (raw file):

 *
 * The Tox_Pass_Key structure is hidden in the implementation. It can be created
 * using tox_pass_key_derive or tox_pass_key_derive_with_salt and must be deallocated using tox_pass_key_free.

Formatting? Also functions' args could be formatted.

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Comments from Reviewable

[robinlinden]

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Reviewed 4 of 4 files at r1.
Review status: all files reviewed at latest revision, 1 unresolved discussion, some commit checks failed.

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Comments from Reviewable

[iphydf]

Assigned toxbot to avoid accidentally pushing this since it's green. Also to make it not green so I don't get distracted by green PRs that can't be merged.

[iphydf]

Review status: 0 of 4 files reviewed at latest revision, 1 unresolved discussion.

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toxencryptsave/toxencryptsave.h, line 244 at r1 (raw file):

Previously, zetok wrote…

Formatting? Also functions' args could be formatted.

Formatting needs to be fixed in apidsl. For that, apidsl needs to become smarter and know more about the semantics of a comment. For now, I'd like to leave it like this to keep the .api file nice.

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Comments from Reviewable

[robinlinden]

Reviewed 4 of 4 files at r2.
Review status: all files reviewed at latest revision, 1 unresolved discussion, some commit checks broke.

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Comments from Reviewable

[SkyzohKey]

Is this PR ready-to-merge ?

[iphydf]

It's an API break, so it's waiting for 0.2, which is a bit more than a month away.

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Review status: 2 of 4 files reviewed at latest revision, 1 unresolved discussion, some commit checks failed.

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Comments from Reviewable

[robinlinden]

Reviewed 4 of 4 files at r3.
Review status: all files reviewed at latest revision, 1 unresolved discussion, all commit checks successful.

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Comments from Reviewable