Modify build Script to preserve code comments in generated SWC

By modifying the following node the in the build.xml file - code comments are added back to the generated SWC

```
  <!-- Build Documentation -->
  <target name="asdoc" depends="compile">
    <echo>[create-docs] Generating ASDOC documentation</echo>
    <tstamp>
      <format property="docgen.time" pattern="MM/dd/yyyy hh:mm aa" unit="hour"/>
    </tstamp>
	  <asdoc output="${doc.loc}" lenient="true" failonerror="true" keep-xml="true" skip-xsl="true" fork="true">
		  <compiler.source-path path-element="${main.src.loc}" />
		  <doc-sources path-element="${main.src.loc}"/>			
	  </asdoc>
	  <zip destfile="${bin.loc}/${project.name.versioned}.swc" update="true">
		  <zipfileset dir="${doc.loc}/tempdita" prefix="docs">
			<include name="*.*"/>
			<exclude name="ASDoc_Config.xml" />
			<exclude name="overviews.xml" />
		  </zipfileset>
		</zip>
    <echo>[create-docs] ASDOC documentation generated successfully</echo>
  </target>
```