Description of problem:
When JBOSS_HOME is set to different directory than the install directory, the installation fails and the process is not terminated

Version-Release number of selected component (if applicable):
6.0.0.ER4

How reproducible: 100%


Steps to Reproduce:
1. set JBOSS_HOME for example to "/home/user/jboss-eap-6.1"
2. start the installation and install the new EAP into "/home/user/test"
3. in the post install configuration (where the server is starting) the exception is displayed
4. server should shut down as it's displayed in the log
5. run the installation again
6. "The port 9999 is already in use and is required for this installation. Please free up port 9999 and try the installation again"

Actual results: server process is still running


Expected results: server process is terminated


Additional info: