FELIX-4026 Ensure Java 1.4 API use and class files

- generate 1.4 class files
- check Java 1.4 API use
- Resolve current non-Java 1.4 API use

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1468913 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/inventory/pom.xml b/inventory/pom.xml
index a421d49..306e407 100644
--- a/inventory/pom.xml
+++ b/inventory/pom.xml
@@ -41,6 +41,44 @@
 
     <build>
         <plugins>
+            <!-- Make sure to not use non Java 1.4 API -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>1.4</source>
+                    <target>1.4</target>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>animal-sniffer-maven-plugin</artifactId>
+                <version>1.7</version>
+                <configuration>
+                    <signature>
+                        <groupId>org.codehaus.mojo.signature</groupId>
+                        <artifactId>java14</artifactId>
+                        <version>1.0</version>
+                    </signature>
+                </configuration>
+                <executions>
+                    <execution>
+                        <phase>test</phase>
+                        <goals>
+                            <goal>check</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        
+            <plugin>
+                <artifactId>maven-javadoc-plugin</artifactId>
+                <configuration>
+                    <excludePackageNames>
+                        *.impl
+                    </excludePackageNames>
+                </configuration>
+            </plugin>
             <plugin>
                 <groupId>org.apache.felix</groupId>
                 <artifactId>maven-bundle-plugin</artifactId>