fixed equinox component name, now: org.eclipse.equinox.executable

fortiss-std-env/buckminster/eclipse-equinox.cquery

 <?xml version="1.0" encoding="UTF-8"?>
 <cq:componentQuery xmlns:cq="http://www.eclipse.org/buckminster/CQuery-1.0" resourceMap="fortiss.rmap">
-    <cq:rootRequest name="org.eclipse.equinox.feature" componentType="eclipse.feature"/>
+    <cq:rootRequest name="org.eclipse.equinox.executable" componentType="eclipse.feature"/>
     <cq:property key="target.arch" value="*"/>
     <cq:property key="target.os" value="*"/>
     <cq:property key="target.ws" value="*"/>