[Translator] coding style
[Translator] fix MessageCatalogueInterface::getFallbackCatalogue that can return null

also use inheritdoc for the implementation
[Translator] mention that the message id may also be an object that can be cast to string in TranslatorInterface and fix the IdentityTranslator that did not respect this
[Translator] fix phpdoc of MessageCatalogueInterface::add and ::replace
[Translator] optimized adding of resources and saving a call to array_unique
[Translator] fix typecast in transChoice
[Translator] fix metadata

- fix '0' problem
- only access metadata when implementing interface
- refactor code
- clarify phpdoc
Routing issue with installation in a sub-directory
ref: https://github.com/symfony/symfony/issues/7129
[DomCrawler] Fix relative path handling in links

Added relative path canonicalization according to RFC 3986, section 5.2.4
[ClassLoader] made DebugClassLoader idempotent
[ClassLoader] tweaked test
[HttpKernel] Fixed possible profiler token collision (closes #7272, closes #7171)
[FrameworkBundle] avoids cache:clear to break if new/old folders already exist
merged branch jfsimon/issue-6502 (PR #7260)

This PR was squashed before being merged into the 2.1 branch (closes #7260).

Commits
-------

1d3da29 [FrameworkBundle] avoids cache:clear to break if new/old folders already exist

Discussion
----------

[FrameworkBundle] avoids cache:clear to break if new/old folders already exist

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #6502

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by mahmouds at 2013-03-04T19:07:20Z

:+1:
merged branch lazyhammer/crawler-relative-links-2.1 (PR #7244)

This PR was merged into the 2.1 branch.

Commits
-------

a4ec677 [DomCrawler] Fix relative path handling in links

Discussion
----------

[2.1][DomCrawler] Fix relative path handling in links

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #7219
| License       | MIT
| Doc PR        | n/a

Added relative path canonicalization according to RFC 3986, section 5.2.4

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by vicb at 2013-03-02T14:48:46Z

@fabpot seems like 2.1 as a deps issue if you look at travis logs
Update RouteCompiler.php

Fixes INF problem on solaris.
[Finder] fixed a potential issue on Solaris where INF value is wrong (refs #7269)
[FramworkBundle] fix phpdoc of commands
[FramworkBundle] removed unused property of trans update command
Fixed test to use Reflection