Fix listing of files with no absolute path
Fix eventual stack overflow after clean cmd
Set engine back to initial state after fatal-ed ev command
Fix phpdbg output when outputting via php with active output handlers
Merge phpdbg into PHP-5.6
Merge remote-tracking branch 'origin/PHP-5.6'

Conflicts:
	sapi/phpdbg/phpdbg.c
	sapi/phpdbg/phpdbg_list.c