Update eSpeak to b17ed2d6 for 2022.4

[seanbudd]

Link to issue number:

Closes #14197

Summary of the issue:

Janitorial update of eSpeak.
Fixes a regression and long standing issue with Turkish pronunciation.
Also fixes a regression in Mandarin pronunciation.

Description of user facing changes

eSpeak is updated

Description of development approach

Followed instructions in include/espeak.md.
Checked the following diffs, which are empty.

cd include/espeak
git diff 735ecdb8 b17ed2d6 src/windows/config.h
git diff 735ecdb8 b17ed2d6 Makefile.am

Testing strategy:

Tested eSpeak after building.

Known issues with pull request:

None

Change log entries:

Refer to diff

Code Review Checklist:

• Pull Request description:
  • description is up to date
  • change log entries
• Testing:
  • Unit tests
  • System (end to end) tests
  • Manual testing
• API is compatible with existing add-ons.
• Documentation:
  • User Documentation
  • Developer / Technical Documentation
  • Context sensitive help for GUI changes
• UX of all users considered:
  • Speech
  • Braille
  • Low Vision
  • Different web browsers
  • Localization in other languages / culture than English
• Security precautions taken.

[seanbudd]

I am merging this without running a PR build, as this PR has merge conflicts with master, and this is a janitorial update of eSpeak with no build changes.
Once this is merged to branchFor2022.4, a PR to merge branchFor2022.4 to master will be opened, which will ensure that the changes in this PR can build correctly.

[alex19EP]

FYI I merged some Russian language improvements in espeak-ng/espeak-ng#1425

I understand if you don't want to update espeak again, but that would be really cool.

[seanbudd]

@alex19EP, we will not be updating eSpeak again for 2022.4.