add new dependency tools.jar to pom.xml file to fix java 1.7 missing com.sun.javadoc.* symbols issue

pom.xml

@@ -23,6 +23,34 @@
 
 	</properties>
 
+	<profiles>
+		<profile>
+			<id>default-profile</id>
+		    <activation>
+		        <activeByDefault>true</activeByDefault>
+		        <file>
+		            <exists>${java.home}/../lib/tools.jar</exists>
+		        </file>
+		    </activation>
+		    <properties>
+		        <toolsjar>${java.home}/../lib/tools.jar</toolsjar>
+		    </properties>
+		</profile>
+		<!-- MAC OS with Sun Java (<= 1.6) -->
+		<profile>
+		    <id>mac-profile-sun</id>
+		    <activation>
+		        <activeByDefault>false</activeByDefault>
+		        <file>
+		            <exists>${java.home}/../Classes/classes.jar</exists>
+		        </file>
+		    </activation>
+		    <properties>
+		        <toolsjar>${java.home}/../Classes/classes.jar</toolsjar>
+		    </properties>
+		</profile>
+	</profiles>
+
 	<licenses>
 		<license>
 			<name>The BSD-2-Clause License</name>
@@ -42,6 +70,13 @@
 	</repositories>
 
 	<dependencies>
+        <dependency>
+            <groupId>com.sun</groupId>
+            <artifactId>tools</artifactId>
+            <version>1.6.0</version>
+            <scope>system</scope>
+            <systemPath>${toolsjar}</systemPath>
+        </dependency>	
 		<dependency>
 			<groupId>com.keypoint</groupId>
 			<artifactId>png-encoder</artifactId>
@@ -179,7 +214,7 @@
 								<artifactId>texdoclet</artifactId>
 								<version>${texdoclet.version}</version>
 							</docletArtifact>
-							<!--<sourcepath>src/main/java:src/test/java</sourcepath>-->
+							<sourcepath>src/main/java:src/test/java</sourcepath>
 							<useStandardDocletOptions>false</useStandardDocletOptions>
 							<additionalparam>
 								-tree