[Process] Add validation on Process input
[Validator] Fixed StaticMethodLoader on systems that don't have E_STRICT enabled by default
ommited space
minor #10964 ommited space in validation message (apodgorbunschih)

This PR was submitted for the master branch but it was merged into the 2.3 branch instead (closes #10964).

Discussion
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ommited space in validation message

Commits
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7d0811c ommited space
minor #10956 [Validator] Fixed StaticMethodLoaderTest on systems that don't have E_STRICT enabled by default (webmozart)

This PR was merged into the 2.3 branch.

Discussion
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[Validator] Fixed StaticMethodLoaderTest on systems that don't have E_STRICT enabled by default

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

Commits
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a470ae2 [Validator] Fixed StaticMethodLoader on systems that don't have E_STRICT enabled by default
bug #10929 [2.3][Process] Add validation on Process input (romainneutron)

This PR was merged into the 2.3 branch.

Discussion
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[2.3][Process] Add validation on Process input

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

This adds validation on Process input. For the moment, passing a stream would result in a PHP error.
I propose to deprecate values that are not strictly string in 2.6 (see upcoming PR)

Commits
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583092b [Process] Add validation on Process input
[WIP][Finder] Fix wrong implementation on sortable callback comparator
bug #10849 [WIP][Finder] Fix wrong implementation on sortable callback comparator (ProPheT777)

This PR was submitted for the master branch but it was merged into the 2.3 branch instead (closes #10849).

Discussion
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[WIP][Finder] Fix wrong implementation on sortable callback comparator

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

Working on this issue, i find SORT_BY_ACCESSED_TIME, SORT_BY_CHANGED_TIME, SORT_BY_MODIFIED_TIME was not tested.

- [x] Add test for SORT_BY_ACCESSED_TIME case
- [x] Add test for SORT_BY_CHANGED_TIME case
- [x] add test for SORT_BY_MODIFIED_TIME case

Commits
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b965fa2 [WIP][Finder] Fix wrong implementation on sortable callback comparator
updated CHANGELOG for 2.3.14
update CONTRIBUTORS for 2.3.14
updated VERSION for 2.3.14
bumped Symfony version to 2.3.15
Revert "bug #10908 [HttpFoundation] implement session locking for PDO (Tobion)"

This reverts commit 8c71454f47bbcdf82693a0501acac3e8fe6e08cf, reversing
changes made to 735e9a4768962b6d5098733c347cff0df6b9cd36.
updated CHANGELOG for 2.3.15
updated VERSION for 2.3.15
bumped Symfony version to 2.3.16
[DomCrawler] Fixed a forgotten case of complex XPath queries
bug #10987 [DomCrawler] Fixed a forgotten case of complex XPath queries (stof)

This PR was merged into the 2.3 branch.

Discussion
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[DomCrawler] Fixed a forgotten case of complex XPath queries

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #10986
| License       | MIT
| Doc PR        | n/a

This fixes the case I forgot when rewritting the XPath to avoid making it produce invalid queries. I ran the new tests against the old implementation first, to ensure they cover the BC properly.

I could have detected it by running the Mink 1.5 testsuite with the new code (which is the case for people reporting the bug), but I only ran it for Mink 1.6 which does not produce such XPath anymore.

Commits
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a9de61e [DomCrawler] Fixed a forgotten case of complex XPath queries
[TwigBridge][Trans]set %count% only on transChoice
bug #10995 [TwigBridge][Trans]set %count% only on transChoice from the current context. (aitboudad)

This PR was merged into the 2.3 branch.

Discussion
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[TwigBridge][Trans]set %count% only on transChoice from the current context.

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #8408
| License       | MIT

Commits
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d176ffc [TwigBridge][Trans]set %count% only on transChoice