Prepare dependencies for release
Merge branch '4.4'
Start PHPUnit 4.6 development
Updated version constraints
Merge pull request #1519 from GrahamCampbell/patch-1

Updated version constraints
Prepare release
Fix version information for optional dependencies in PHAR build
Merge branch '4.4' into 4.5
Merge branch '4.5'
Fix spacing from df99fb8.
Cleanup bootstraps.
Missing from edaf1e0.
Merge branch '4.4' into 4.5
Merge branch '4.5'
Intercept SIGINT signal

If the function `pcntl_signal()` exists creates an signal handler for
SIGINT which prints the summary of test suite and generates code
coverage reports.
Move on `PHPUnit_TextUI_TestRunner` all code which prints results and
generates coverage from `doRun()` method to `doReports()` method.