Allow to define values to the "colors" option
Merge pull request #1527 from henriquemoody/colors

Allow to define options to display colors
restore phpunit.xml schema compatibility, colors=always only allowed from command line options
typo in comment
false means NEVER
Merge pull request #1529 from remicollet/issue-colors3

restore phpunit.xml schema compatibility, colors=always only allowed fro...
Fixes #1522: Fugbix typo.
Create tests for "colors" in configuration files
Merge pull request #1534 from henriquemoody/colors

Create tests for "colors" in configuration files
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.