…stancies (closes symfony#6923, closes symfony#6936)

This fixes the creation of a sub-request when the master request Request URI
is determined with specific server information.

This PR was merged into the 2.0 branch.

Commits
-------

ddf4678 [HttpFoundation] fixed the creation of sub-requests under some circumstancies (closes symfony#6923, closes symfony#6936)

Discussion
----------

[HttpFoundation] fixed the creation of sub-requests under some circumstancies (closes symfony#6923, closes symfony#6936)

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | symfony#6923, symfony#6936
| License       | MIT
| Doc PR        | n/a

This fixes the creation of a sub-request when the master request Request URI
is determined with specific server information.

This PR was merged into the 2.0 branch.

Commits
-------

a12744e Add dot character `.` to legal mime subtype regular expression

Discussion
----------

[HttpFoundation][2.0] Add dot character `.` to legal mime subtype regular expression

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

For example, the following mimetype (used for Microsoft powerpoints) is not recognized given the current regexp : `application/vnd.ms-powerpoint; charset=binary`

…ainer-2.1

* upstream/2.1: (2632 commits)
  [HttpKernel] fixed the creation of the Profiler directory
  [Security] fixed session creation when none is needed (closes symfony#6917)
  [FrameworkBundle] removed obsolete comment (see 2e356c1)
  Correct comment in NativeSessionStorage regarding session.save_handler
  [Yaml] fixed wrong merge (indentation default is 4 as of 2.1)
  Fixed missing class argument when throwing exception
  [Security] Add PHPDoc to AuthenticationEvents
  Fix typos in README
  Added an error message in the DebugClassLoader when using / instead of \.
  KNOWN_ISSUES with php 5.3.16
  bumped Symfony version to 2.1.8-DEV
  updated VERSION for 2.1.7
  updated CHANGELOG for 2.1.7
  fixed CS
  [Process] Fix docblocks, remove `return` from `PhpProcess#start()` as parent returns nothing, cleaned up `ExecutableFinder`
  fixes a bug when output/error output contains a % character
  [Profiler] [Redis] Fix sort of profiler rows.
  Removed underscores from test method names to be consistent with other components.
  Fix version_compare() calls for PHP 5.5.
  Handle the deprecation of IntlDateFormatter::setTimeZoneId() in PHP 5.5.
  ...

Conflicts:
	tests/Symfony/Tests/Component/DependencyInjection/Dumper/GraphvizDumperTest.php

…n 2.1