Description:

Using the default RH7.1 openmotif, the use of uil on
an otherwise correct uil file will produce:
Error: invalid module structure - check UIL module syntax

Info: no UID file was produced

Info: errors: 1   warings:0  informationals: 1

How Reproducible:
very

Steps to Reproduce:
1. Create a file test.uil
with contents
--------
module test
end module;
--------

2. Call: uil test.uil

Actual Results:
See description

Expected Results:
No viaual output, but a a.uid file generated

Additional Information:
	
The problem can be solved by using byacc as the yacc compiler
in stead of bison.  This can be modified in the configuration
files for linux (e.g. linux.cf)