* Fixing travis-ci/local inconsistencies in AutoSuggestAPITest.php. (userAgent was not correctly set in fixture)

* In CliMulti, ignore zombie processes when parsing ps output.

* Set URL of tracker in ThreeVisitsWithCustomEvents fixture, so test does not depend on _SERVER["HTTP_HOST"] which in turn depends on dynamic INI config value.

* PHPUnit tests should not refer to each other, otherwise the PSR autoloader will be used, and PHPUnit will not load the file itself (resulting in the test not being run).

* Update OneVisitorTwoVisitsTest expected files.

* URL encode attribution date time in fixture since the tracker will not do it itself.

Fixing test in CliMultiTest.php that fails now that loaded access is removed when the environment is recreated. So now in RequestCommand when the container is recreated, the Access instance is destroyed and the doAsSuperUser call is negated.

Declares a process as finished as soon as a PID file is > 500bytes
(contains only PID) and output file is > 100MB (which should usually
not be larger than 100KB or 1MB) to prevent files growing up to many
GBs. I added unit and integration tests for the file size detection. It is
now possible to mock the methods file_exists and filesize although very
simple so far. Later we can allow to define callbacks or to define different
return values for different files or we can use something like vfsStream

refs #5940 moved files into a subfolder framework, added autoloader to remove duplicated code to load autoload.php and to be able to register more autoloaders (eg for test files) on demand. This I got read of many includes that had to be updated all the time and that had to be updated all the time when moving iles

refs #5940 we might stay backwards compatible this way for 2 months. moved some tests from unit to integration and explained when a test is a unit test, an integration test or a system test.

refs #5940 put tests in correct folders, better testsuite names, some tests still fail and I cannot figure out why

Refs #5800, add namespaces to integration tests in root folder. Also add IntegrationTestCase to a namespace, re-add individual test @groups, move test groups to class level, and rename test files & class names so underscores are not used.

Piwik is a free/libre analytics platform. Refs #4455 GNU Package requirement to use free/libre instead of open source

This is set to three concurrent processes in core:archive command.
Refs #4903

- Rename *_BaseFixture to Fixture.
- Move DB setup code to Fixture and reuse code in DatabaseTestCase.
- Make IntegrationTestCase::$defaultApiNotToCall an instance var.

check whether the command ps is executable which is not the case if there is no access to proc/version, see http://forum.piwik.org/read.php?2,111608

refs #4610 simplified some logic, fallback to http on windows, redirect the output of php to get output even if piwik exits