Remove executable bit from all PHP files
merged branch TravisCarden/master (PR #6933)

This PR was merged into the master branch.

Commits
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924c256 Remove executable bit from all PHP files

Discussion
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Remove executable bit from all PHP files

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   |
| Fixed tickets |
| License       | MIT
| Doc PR        |

Apologies if I haven't got the protocol quite right here. This is my first interaction with this project.

By the way, I've noticed a non-trivial number of pull requests to remove executable bits. Could there be an automated test to prevent files getting into the repo with them on in the first place?
updated the branch alias in composer files