* restore compatibility with old bison
* disable versioned symbols - the -current ld has a problem with them
* fix an instance of improper shell quoting
* the SIGPIPE hack inside tar needs a sh not csh (fixes PR#15706)
- pth>=1.4.0nb1 is a runtime dependency
- our csh is sufficient for compilation
productivity suite. It includes the key desktop applications, such as a
word processor, spreadsheet, presentation manager, and drawing program,
with a user interface and feature set similar to other office suites.