In order to build Checkstyle Beans from sources you have to do
the following steps. As a prerequisite you also need JDK 6 and Maven 3.

1) Download NetBeans 7.0 and unzip it.
http://download.netbeans.org/netbeans/7.0/final/zip

2) Populate Maven repository.
mvn nbm:populate-repository -DnetbeansInstallDirectory=/path/to/netbeans

3) Build Checkstyle Beans.
cd /path/to/checkstyle/beans/
mvn clean install package assembly:attached nbm:autoupdate

4) NBM files are available in target directory.
