Don't use explicit url and version in generated category.xml

tycho_build.gradle

@@ -374,7 +374,6 @@ task createRepository() {
 
 		String versionNumber = '1.0.0.qualifier'
 		String artifactId = repositoryName
-		String featureVersionNumber = '1.0.0.qualifier'
 		String featureArtifactId
 		def f = new File(workspacePath + artifactId + '/category.xml')
 		f.delete()
@@ -382,10 +381,9 @@ task createRepository() {
 		for (int i = 0; i < features.size(); i++) {
 			def parsedXml = new XmlParser().parse("${workspacePath}${features[i]}/feature.xml")
 
-			featureVersionNumber  = parsedXml.attribute("version")
 			featureArtifactId  = parsedXml.attribute("id")
 
-			f << categoryFeature(categoryId, featureArtifactId.replace(workspacePath, ''), featureVersionNumber)
+			f << categoryFeature(categoryId, featureArtifactId.replace(workspacePath, ''))
 		}
 
 		f << categoryDef(categoryId, categoryLabel, categoryDescription)
@@ -573,8 +571,8 @@ def categoryHead() {"""\
 <site>
 """}
 
-def categoryFeature(category, artifactId, versionNumber) {"""
-	<feature url="features/${artifactId}_${versionNumber}.jar" id="${artifactId}" version="${versionNumber}">
+def categoryFeature(category, artifactId) {"""
+	<feature id="${artifactId}" version="0.0.0">
 		<category name="${category}"/>
 	</feature>
 """}