New "commons-numbers-autodiff" module.

Scope: Port of "DerivativeStructure" and related classes from "Commons Math"
(package "o.a.c.math4.analysis.differentiation").
diff --git a/commons-numbers-autodiff/pom.xml b/commons-numbers-autodiff/pom.xml
new file mode 100644
index 0000000..de62884
--- /dev/null
+++ b/commons-numbers-autodiff/pom.xml
@@ -0,0 +1,48 @@
+<?xml version="1.0"?>
+<!--
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You under the Apache License, Version 2.0
+   (the "License"); you may not use this file except in compliance with
+   the License.  You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+-->
+<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
+         xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.apache.commons</groupId>
+    <artifactId>commons-numbers-parent</artifactId>
+    <version>1.0-SNAPSHOT</version>
+  </parent>
+
+  <groupId>org.apache.commons</groupId>
+  <artifactId>commons-numbers-primes</artifactId>
+  <version>1.0-SNAPSHOT</version>
+  <name>Apache Commons Numbers Automatic Differentiation</name>
+
+  <description>Automatic differentiation (requires Java 8+).</description>
+
+  <properties>
+    <maven.compiler.source>1.8</maven.compiler.source>
+    <maven.compiler.target>1.8</maven.compiler.target>
+
+    <!-- This value must reflect the current name of the base package. -->
+    <commons.osgi.symbolicName>org.apache.commons.numbers.autodiff</commons.osgi.symbolicName>
+    <!-- OSGi -->
+    <commons.osgi.export>org.apache.commons.numbers.autodiff</commons.osgi.export>
+    <!-- Workaround to avoid duplicating config files. -->
+    <numbers.parent.dir>${basedir}/..</numbers.parent.dir>
+  </properties>
+
+</project>
diff --git a/commons-numbers-autodiff/src/site/resources/profile.jacoco b/commons-numbers-autodiff/src/site/resources/profile.jacoco
new file mode 100644
index 0000000..a12755f
--- /dev/null
+++ b/commons-numbers-autodiff/src/site/resources/profile.jacoco
@@ -0,0 +1,17 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# -----------------------------------------------------------------------------
+#
+# Empty file used to automatically trigger JaCoCo profile from commons parent pom