Update SimpleSpec to current version of simpletest.

  -- rename _isTest to isTest and _reporter to reporter
Feat: Implement iterating over explicit list.

      {% for e in 1,2,3,4 %}{{ e }}{% endfor %} => 12345
Whitespace changes.
Feat: Implement dynamic {% include %} tags.

  {% for year in 2014,2015,2016 %}
      {% include 'summary-{year}.html' %}
  {% endfor %}
Feat: Implement handling of compound expressions in the {% if %} tag.

  {% if person.age > legal_age and person.age < (legal_age+2)* 2 %}
     You are neither young nor old
  {% else %}
     You are either young or old
  {% endif %}
Feat: Implement expression evaluation in {{ }}.

  {{ year-1 }}, {{ 2*pi*(r+10) }}, ...
BugFix: Add directory separator to end of searchpath elements.
Added to .gitignore

  -- kdev4 files generated by the kdevelop IDE
  -- symlink to the simpletest library