Update Perforce's p4java library

I'd like to upload the new p4java artifact.

I following the instructions at the end of the following issue though I'm getting a 401 error

https://issues.sonatype.org/browse/OSSRH-685

Here is the error I get after invoking 'mvn gpg:sign-and-deploy-file'

Failed to execute goal org.apache.maven.plugins:maven-gpg-plugin:1.4:sign-and-deploy-file (default-cli) on project p4java: Failed to deploy artifacts: Could not transfer artifact com.perforce:p4java:jar:2012.3.551082 from/to sonatype-nexus-staging (https://oss.sonatype.org/service/local/staging/deploy/maven2/): Access denied to: https://oss.sonatype.org/service/local/staging/deploy/maven2/com/perforce/p4java/2012.3.551082/p4java-2012.3.551082.jar -> [Help 1]