Update: This ticket originally required updates to aspell in order to run s_string on the cppsuite code, but since then we've defined our cpp style guide which uses snake_case and this update is no longer required. The scope of this ticket is now only to enable s_string on cppsuite.

Summary
WT-9385 updates cppsuite code to use camelCase for function names as per the mongo C++ style guide. However, while s_string was able to understand that snake_case (pad_string()) names are comprised of two correct words, it doesn't understand this for the new camelCase (padString()) names and reports false errors.

This is because s_string calls the spellchecking program aspell, but the version available on our platforms (aspell 0.60.7-20110707) doesn't support camel case. Newer versions of aspell, as of version 0.60.8, support this via the --camel-case flag.

For now we have disabled s_string on the cppsuite code, but this needs fixing. To do so we need to update the available version of aspell across all platforms running s_all.

Additionally during investigation we found that s_spell is not being applied to the C++ code in ext/storage_sources/s3_store. We should review the list of files s_string is applied to and make sure we are covering all of our source files.

Motivation

• Does this affect any team outside of WT?
  No

• How likely is it that this use case or problem will occur?
  N/A

• If the problem does occur, what are the consequences and how severe are they?
  None. This just prevents spell checking on C++ code.

• Is this issue urgent?
  No

Acceptance Criteria (Definition of Done)
s_string can be applied to C++ code using camel case function names. It doesn't report false positives such as padString, and does report errors such as paddString.
s_string is also being applied to the S3 code in ext/storage_sources/s3_store.