[Config] fix error handler restoration in test
[VarDumper] fix and test PdoCaster
[FrameworkBundle] forward error reporting level to insulated Client
bug #13081 [FrameworkBundle] forward error reporting level to insulated Client (nicolas-grekas)

This PR was merged into the 2.3 branch.

Discussion
----------

[FrameworkBundle] forward error reporting level to insulated Client

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

Especially if deprecation notices are silenced on the main php instance, we should also silence them in the insulated Client

Commits
-------

d82e062 [FrameworkBundle] forward error reporting level to insulated Client
fix dependency on ExtensionInterface over implementation
bug #13085 [FrameworkBundle] Fix dependency on ExtensionInterface over implementation (xphere)

This PR was merged into the 2.5 branch.

Discussion
----------

[FrameworkBundle] Fix dependency on ExtensionInterface over implementation

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | no (but anyway, they didn't pass previously)
| Fixed tickets | #13084
| License       | MIT

When implementing `ExtensionInterface` through classes not inheriting the core `Extension`, the command `config:dump` throws.
This bug was introduced in 2.5 and could be fixed up to 2.7 with the same patch.

Commits
-------

5e1a5f7 fix dependency on ExtensionInterface over implementation
bug #13073 [VarDumper] fix and test PdoCaster (nicolas-grekas)

This PR was merged into the 2.6 branch.

Discussion
----------

[VarDumper] fix and test PdoCaster

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #13042
| License       | MIT
| Doc PR        | -

Commits
-------

0b1be13 [VarDumper] fix and test PdoCaster
bug #13075 [Config] fix error handler restoration in test (nicolas-grekas)

This PR was merged into the 2.3 branch.

Discussion
----------

[Config] fix error handler restoration in test

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

Commits
-------

266afeb [Config] fix error handler restoration in test
Add LegacyPdoSessionHandler class

The changes made to the PdoSessionHandler in 2.6 introduced a
backwards-compatability break for users upgrading from 2.5. This update
introduces a LegacyPdoSessionHandler class that uses the old service's
functionality.

Users who cannot make schema updates or do not want to lose sessions can
use LegacyPdoSessionHandler until 3.0.
bug #13068 Add LegacyPdoSessionHandler class (jeremylivingston)

This PR was submitted for the 2.7 branch but it was merged into the 2.6 branch instead (closes #13068).

Discussion
----------

Add LegacyPdoSessionHandler class

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | yes
| Tests pass?   | yes
| Fixed tickets | #12833
| License       | MIT
| Doc PR        | N/A

Fix for #12994 on the 2.7 branch.

The changes made to the PdoSessionHandler in 2.6 introduced a
backwards-compatability break for users upgrading from 2.5. This update
introduces a LegacyPdoSessionHandler class that uses the old service's
functionality.

Users who cannot make schema updates or do not want to lose sessions can
use LegacyPdoSessionHandler until 3.0.

Commits
-------

3bd1616 Add LegacyPdoSessionHandler class
Merge branch '2.3' into 2.5

* 2.3:
  [FrameworkBundle] forward error reporting level to insulated Client
  [Config] fix error handler restoration in test
Merge branch '2.5' into 2.6

* 2.5:
  fix dependency on ExtensionInterface over implementation
  [FrameworkBundle] forward error reporting level to insulated Client
  [Config] fix error handler restoration in test
Merge branch '2.6' into 2.7

* 2.6:
  Add LegacyPdoSessionHandler class
  fix dependency on ExtensionInterface over implementation
  [FrameworkBundle] forward error reporting level to insulated Client
  [VarDumper] fix and test PdoCaster
  [Config] fix error handler restoration in test