Added PDE nature to project for schema validation builder.
diff --git a/bundles/org.eclipse.core.runtime/.classpath b/bundles/org.eclipse.core.runtime/.classpath
index a1ec0e0..885b188 100644
--- a/bundles/org.eclipse.core.runtime/.classpath
+++ b/bundles/org.eclipse.core.runtime/.classpath
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
-    <classpathentry kind="var" path="JRE_LIB" rootpath="JRE_SRCROOT" sourcepath="JRE_SRC"/>
-    <classpathentry kind="src" path="/org.eclipse.core.boot"/>
-    <classpathentry kind="src" path="src"/>
+    <classpathentry kind="src" path="src/"/>
     <classpathentry kind="src" path="/org.apache.xerces"/>
+    <classpathentry kind="src" path="/org.eclipse.core.boot"/>
+    <classpathentry kind="var" path="JRE_LIB" rootpath="JRE_SRCROOT" sourcepath="JRE_SRC"/>
     <classpathentry kind="output" path="bin"/>
 </classpath>
diff --git a/bundles/org.eclipse.core.runtime/.project b/bundles/org.eclipse.core.runtime/.project
index 3edd828..b826ed6 100644
--- a/bundles/org.eclipse.core.runtime/.project
+++ b/bundles/org.eclipse.core.runtime/.project
@@ -12,8 +12,19 @@
 			<arguments>
 			</arguments>
 		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.pde.ManifestBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.pde.SchemaBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
 	</buildSpec>
 	<natures>
 		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.eclipse.pde.PluginNature</nature>
 	</natures>
 </projectDescription>