Added plexus-xml dependency

As it's separate library since plexus-util 4.0

pom.xml

@@ -144,6 +144,12 @@
 				<artifactId>plexus-utils</artifactId>
 				<version>${plexusUtilsVersion}</version>
 			</dependency>
+			<!--plexus-utils 4.x with plexus-xml 3.x is Maven 3 compatible-->
+			<dependency>
+			    <groupId>org.codehaus.plexus</groupId>
+			    <artifactId>plexus-xml</artifactId>
+			    <version>3.0.1</version>
+			</dependency>
 			<dependency>
 				<groupId>org.codehaus.plexus</groupId>
 				<artifactId>plexus-archiver</artifactId>

sisu-osgi/sisu-osgi-connect/pom.xml

@@ -38,6 +38,10 @@
 			<groupId>org.codehaus.plexus</groupId>
 			<artifactId>plexus-component-annotations</artifactId>
 		</dependency>
+		<dependency>
+		    <groupId>org.codehaus.plexus</groupId>
+		    <artifactId>plexus-xml</artifactId>
+		</dependency>
 		<dependency>
 			<groupId>commons-io</groupId>
 			<artifactId>commons-io</artifactId>

tycho-core/pom.xml

@@ -187,6 +187,10 @@
 			<artifactId>plexus-interpolation</artifactId>
 			<version>1.27</version>
 		</dependency>
+		<dependency>
+		    <groupId>org.codehaus.plexus</groupId>
+		    <artifactId>plexus-xml</artifactId>
+		</dependency>
 		<dependency>
 			<groupId>org.codehaus.plexus</groupId>
 			<artifactId>plexus-cipher</artifactId>

tycho-extras/tycho-pomless/pom.xml

@@ -60,6 +60,10 @@
 			<groupId>commons-io</groupId>
 			<artifactId>commons-io</artifactId>
 		</dependency>
+		<dependency>
+		    <groupId>org.codehaus.plexus</groupId>
+		    <artifactId>plexus-xml</artifactId>
+		</dependency>
 		<dependency>
 			<groupId>org.apache.maven</groupId>
 			<artifactId>maven-embedder</artifactId>

tycho-spi/pom.xml

@@ -30,6 +30,10 @@
 			<artifactId>tycho-api</artifactId>
 			<version>${project.version}</version>
 		</dependency>
+		<dependency>
+		    <groupId>org.codehaus.plexus</groupId>
+		    <artifactId>plexus-xml</artifactId>
+		</dependency>
 	</dependencies>
 	<build>
 		<resources>