Work around project.build.resources being overridden

When specifying a project.build.resources section in a child pom.xml,
the parent's resources section is overridden -- not appended to, as this
developer expected. Therefore, we have to specify src/main/resources
explicitly if we want to keep it as a place to put resources into.

To be careful, we prefix it by ${basedir}/ just to make sure that we can
simply copy this code to aggregate projects whenever needed without
breaking things.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

pom.xml

@@ -28,11 +28,17 @@
 
 	<build>
 		<resources>
+			<resource>
+				<directory>${basedir}/src/main/resources</directory>
+			</resource>
 			<resource>
 				<directory>${project.build.sourceDirectory}</directory>
 			</resource>
 		</resources>
 		<testResources>
+			<testResource>
+				<directory>${basedir}/src/test/resources</directory>
+			</testResource>
 			<testResource>
 				<directory>${project.build.testSourceDirectory}</directory>
 			</testResource>