Remove need for extra languages from PE build process

[rhness]

The PE build process currently relies on the following technologies:

• JCL
• UNIX scripts
• Java
• FreeMarker Template Language
• ISPF File Tailoring services
• ISPF Library Management services
• TSO services
• REXX

It could be rewritten to need only the following technologies:

• JCL
• UNIX scripts
• Java
• FreeMarker Template Language