do not force doxygen to be present

bindings/java/build.xml

@@ -126,13 +126,13 @@
 		</javac>
 	</target>
 
-	<target name="SQLite" depends="doxygen, check-build, init-ivy, compile, copyLibsSQLite"
+	<target name="SQLite" depends="check-build, init-ivy, compile, copyLibsSQLite"
 			unless="up-to-date" description="generate the distribution" >
 		<!-- Put everything in ${build} into the MyProject-${DSTAMP}.jar file -->
 		<jar jarfile="${dist}/Tsk_DataModel.jar" basedir="${build}"/>
 	</target>
 
-	<target name="PostgreSQL" depends="doxygen, check-build, init-ivy, compile, copyLibs-PostgreSQL" 
+	<target name="PostgreSQL" depends="check-build, init-ivy, compile, copyLibs-PostgreSQL" 
 			unless="up-to-date" description="generate the PostgreSQL distribution" >
 		<!-- Put everything in ${build} into the MyProject-${DSTAMP}.jar file -->
 		<jar jarfile="${dist}/Tsk_DataModel.jar" basedir="${build}"/>
@@ -158,13 +158,13 @@
 		<antcall target="Debug-SQLite"/>
 	 </target>
 	
-	<target name="Debug-SQLite" depends="doxygen, check-build, init-ivy, compile, copyLibsSQLiteDebug" 
+	<target name="Debug-SQLite" depends="check-build, init-ivy, compile, copyLibsSQLiteDebug" 
 			unless="up-to-date" description="generate the debug distribution" >
 		<!-- Put everything in ${build} into the MyProject-${DSTAMP}.jar file -->
 		<jar jarfile="${dist}/Tsk_DataModel.jar" basedir="${build}"/>
 	</target>
   
-	<target name="Debug-PostgreSQL" depends="doxygen, init-ivy, compile, copyLibsDebug-PostgreSQL" 
+	<target name="Debug-PostgreSQL" depends="init-ivy, compile, copyLibsDebug-PostgreSQL" 
 			description="generate the PostgreSQL debug distribution" >
 		<!-- Put everything in ${build} into the MyProject-${DSTAMP}.jar file -->
 		<jar jarfile="${dist}/Tsk_DataModel.jar" basedir="${build}"/>