GH88 fully qualified classname in summary report

[manuelpichler]

This adds the attribute fqname to class entries in the summary report. This attribute will contain the full namespaced name of a class, when it is declared within a namespace.

<?xml version="1.0" encoding="UTF-8"?>
<metrics generated="2015-09-23T06:23:41" pdepend="@package_version@">
  <files>
    <file name="…"/>
  </files>
  <package name="pkg1" loc="42" ncloc="23">
    <class fqname="pkg1\FooBar" name="FooBar" start="10" end="29" loc="9" ncloc="7">
      <file name="…"/>
      <method name="x" start="23" end="23" loc="101" ncloc="99"/>
      <method name="y" start="24" end="28" loc="90" ncloc="80"/>
    </class>
    <function name="foo" start="4" end="8" loc="50" ncloc="45">
      <file name="…"/>
    </function>
  </package>
</metrics>

But it will only contain the local class name when it is defined with a package annotation:

<?xml version="1.0" encoding="UTF-8"?>
<metrics generated="2015-09-23T06:23:41" pdepend="@package_version@">
  <files>
    <file name="…"/>
  </files>
  <package name="pkg1" loc="42" ncloc="23">
    <class fqname="FooBar" name="FooBar" start="10" end="29" loc="9" ncloc="7">
      <file name="…"/>
      <method name="x" start="23" end="23" loc="101" ncloc="99"/>
      <method name="y" start="24" end="28" loc="90" ncloc="80"/>
    </class>
    <function name="foo" start="4" end="8" loc="50" ncloc="45">
      <file name="…"/>
    </function>
  </package>
</metrics>

Closes #88 and closes #141