Move the version to 1.12

MPECLIPSE-127 : add support for wtp 1.5
Dynamically set java and servlet versions in the facet descriptor
Add a new property maven.eclipse.enable to avoid to have to define some natures to enable wtp
Update documentation
Generates project settings to store the compiler source and target levels


git-svn-id: https://svn.apache.org/repos/asf/maven/maven-1/plugins/trunk@531133 13f79535-47bb-0310-9956-ffa450edef68

eclipse/src/plugin-test/wtptest/project.properties

@@ -1,6 +1,3 @@
 maven.eclipse.resources.addtoclasspath=true
 maven.multiproject.type=war
-
-maven.eclipse.projectnatures=org.eclipse.jdt.core.javanature,org.eclipse.wst.common.modulecore.ModuleCoreNature
-maven.eclipse.buildcommands=org.eclipse.wst.common.modulecore.ComponentStructuralBuilder,org.eclipse.jdt.core.javabuilder,org.eclipse.wst.common.modulecore.ComponentStructuralBuilderDependencyResolver
-maven.eclipse.conclasspath=org.eclipse.jst.server.core.container/org.eclipse.jst.server.tomcat.runtimeTarget/Apache Tomcat v5.5,org.eclipse.jst.j2ee.internal.web.container/wtptest
+maven.eclipse.wtp.enable=true