Merge branch '1.7'

* 1.7:
  Switch to phpdbg as coverage provider

build.xml

@@ -91,7 +91,7 @@
             description="runs all tests"/>
 
     <target name="coverage" description="generates coverage report">
-        <exec command="phpunit --configuration coverage.xml"
+        <exec command="phpdbg -qrr vendor/phpunit/phpunit/phpunit --configuration coverage.xml"
               passthru="true" logoutput="true"/>
     </target>