build: Activate JaCoCo explicitly for Ant build

When building with Ant, instead of Moxie, JaCoCo is not included in the
classpath. So explicitly initialise the full `jacocoant.jar` from the
`.moxie` repository.

For this we had to switch the dependency to use the `nodeps` jar which
includes all dependencies.

build.moxie

@@ -192,5 +192,5 @@ dependencies:
 - test 'org.mockito:mockito-core:1.10.19'
 # Dependencies with the "build" scope are retrieved
 # and injected into the Ant runtime classpath
-- build 'org.jacoco:org.jacoco.ant:0.8.4'
+- build 'org.jacoco:org.jacoco.ant:0.8.4:nodeps'
 - build 'org.parboiled:parboiled-java:1.3.1'

build.xml

@@ -12,7 +12,9 @@
 	<property name="moxie.url" value="http://gitblit.github.io/moxie/maven" />
 	<property name="moxie.jar" value="moxie-toolkit-${moxie.version}.jar" />
 	<property name="moxie.dir" value="${user.home}/.moxie" />
-	
+
+	<property name="jacoco.version" value="0.8.4" />
+
 	<!-- Download Moxie from it's Maven repository to user.home -->
 	<mkdir dir="${moxie.dir}" />
 	<get src="${moxie.url}/com/gitblit/moxie/moxie-toolkit/${moxie.version}/${moxie.jar}"
@@ -46,7 +48,12 @@
 		     If it exists, build.properties is automatically loaded.
 		     Explicitly set mxroot allowing CI servers to override the default. -->
 		<mx:init verbose="no" mxroot="${moxie.dir}" />
-				
+
+		<!-- Register JaCoCo tasks -->
+		<taskdef uri="antlib:org.jacoco.ant">
+			<classpath location="${moxie.dir}/remote/repo1.maven.org_maven2/org/jacoco/org.jacoco.ant/${jacoco.version}/org.jacoco.ant-${jacoco.version}-nodeps.jar" />
+		</taskdef>
+
 		<!-- Set Ant project properties -->
 		<property name="release.tag" value="v${project.version}" />
 		<property name="currentRelease.tag" value="v${project.releaseVersion}" />