support bin divisions up to 65536 (backport #17563)

[mergify]

This is an automatic backport of pull request #17563 done by Mergify.
Cherry-pick of db8811e has failed:

On branch mergify/bp/v1.7/pr-17563
Your branch is up to date with 'origin/v1.7'.

You are currently cherry-picking commit db8811eac.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   runtime/src/lib.rs
	new file:   runtime/src/pubkey_bins.rs

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   runtime/src/accounts_db.rs

To fix up this pull request, you can check it out locally. See documentation: https://help.github.com/articles/checking-out-pull-requests-locally/

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[mergify]

automerge label removed due to a CI failure

[mergify]

automerge label removed due to a CI failure

[codecov]

Codecov Report

Merging #17692 (de0bf9b) into v1.7 (498bf91) will increase coverage by 0.0%.
The diff coverage is 94.0%.

@@           Coverage Diff            @@
##             v1.7   #17692    +/-   ##
========================================
  Coverage    82.5%    82.6%            
========================================
  Files         428      431     +3     
  Lines      119545   119715   +170     
========================================
+ Hits        98741    98934   +193     
+ Misses      20804    20781    -23     

[mergify]

automerge label removed due to a CI failure

[mergify]

automerge label removed due to a CI failure