Libphonenumber java jars are now compiled at java v1.6 (previously v1.5) (#2359)

* class file java version check wrt maven config

* Recommiting the jars built with updated java version

* Updating encoding for demo as well for consistency

java/demo/pom.xml

@@ -26,7 +26,8 @@
         <version>2.3.2</version>
         <configuration>
           <source>1.6</source>
-          <target>1.6</target>
+	  <target>1.6</target>
+	  <encoding>UTF-8</encoding>
         </configuration>
       </plugin>
       <plugin>

java/pom.xml

@@ -161,8 +161,9 @@
         <artifactId>maven-compiler-plugin</artifactId>
         <version>2.3.2</version>
         <configuration>
-          <source>1.5</source>
-          <target>1.5</target>
+          <source>1.6</source>
+	  <target>1.6</target>
+	  <encoding>UTF-8</encoding>
         </configuration>
       </plugin>
       <plugin>

tools/java/common/pom.xml

@@ -29,8 +29,9 @@
         <artifactId>maven-compiler-plugin</artifactId>
         <version>2.0.2</version>
         <configuration>
-          <source>1.5</source>
-          <target>1.5</target>
+          <source>1.6</source>
+	  <target>1.6</target>
+	  <encoding>UTF-8</encoding>
         </configuration>
       </plugin>
       <!-- Add ../../../java/libphonenumber/src/ to make Phonemetadata.java available to the source

tools/java/cpp-build/pom.xml

@@ -27,8 +27,9 @@
         <artifactId>maven-compiler-plugin</artifactId>
         <version>2.0.2</version>
         <configuration>
-          <source>1.5</source>
-          <target>1.5</target>
+          <source>1.6</source>
+	  <target>1.6</target>
+	  <encoding>UTF-8</encoding>
         </configuration>
       </plugin>
       <!-- Create a directory called 'generated'. -->

tools/java/data/pom.xml

@@ -50,7 +50,8 @@
         <version>2.0.2</version>
         <configuration>
           <source>1.6</source>
-          <target>1.6</target>
+	  <target>1.6</target>
+	  <encoding>UTF-8</encoding>
         </configuration>
       </plugin>
       <plugin>

tools/java/java-build/pom.xml

@@ -49,8 +49,9 @@
         <artifactId>maven-compiler-plugin</artifactId>
         <version>2.0.2</version>
         <configuration>
-          <source>1.5</source>
-          <target>1.5</target>
+          <source>1.6</source>
+	  <target>1.6</target>
+	  <encoding>UTF-8</encoding>
         </configuration>
       </plugin>
       <plugin>