Add class constants for access decision strategies.
[Process] Add Process::disableOutput and Process::enableOutput methods
feature #10425 [Process] Add Process::disableOutput and Process::enableOutput methods (romainneutron)

This PR was merged into the 2.5-dev branch.

Discussion
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[Process] Add Process::disableOutput and Process::enableOutput methods

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #9007
| License       | MIT
| Doc PR        | https://github.com/symfony/symfony-docs/pull/3664

This is another implementation for #9007 that allows to disable the output/error-output storage in a Process in order to avoid using memory.
This is particularly useful when the process outputs large data and it's not read.

Commits
-------

a891e14 [Process] Add Process::disableOutput and Process::enableOutput methods
clean up commands from framework bundle
minor #10432 clean up framework bundle commands (cordoval)

This PR was merged into the 2.5-dev branch.

Discussion
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clean up framework bundle commands

|Q            |A  |
|---          |---|
|Bug Fix?     |no |
|New Feature? |no |
|BC Breaks?   |no |
|Deprecations?|no |
|Tests Pass?  |yes|
|Fixed Tickets|   |
|License      |MIT|
|Doc PR       |na |

Commits
-------

0984313 clean up commands from framework bundle
minor #10390 [Security] Add constants for access decision strategies (c960657)

This PR was merged into the 2.5-dev branch.

Discussion
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[Security] Add constants for access decision strategies

I suggest adding constants for the three access decision strategies (affirmative, consensus, unanimous).

They are difficult to spell, and without constants they are difficult to identify when reading the code.

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

Commits
-------

5d6ef00 Add class constants for access decision strategies.
[SecurityBundle] changed a hardcoded string to its constant equivalent