Recommend configuration settings for the maven-release-plugin

[Neil Griffin]

Dear friends of Pluto,

Regarding the release process, I recommend the following configuration settings 
for the maven-release-plugin:

        <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-release-plugin</artifactId>
                <version>2.5.1</version>
                <configuration>
                        <autoVersionSubmodules>true</autoVersionSubmodules>
                        <pushChanges>false</pushChanges>
                        <localCheckout>true</localCheckout>
                </configuration>
        </plugin>

In particular, pushChanges=false provides greater flexibility if the release 
process fails.


Best Regards to all,

Neil