Documentation Dependency Tracking Bug

[Joel Sherrill]

Hi

I was tidying up my patches to support both Texinfo 4.x and 5.x
for RTEMS documentation when I noticed a bug in the Makefile's
and confirmed they are present without my modifications.

Each manual has a version.texi which is supposed to be dependent
on the timestamp of that manual's main file. So the C User's Guide
is dependent on touching c_user.texi to update version.texi.

As best I can tell, this no longer works.  A patch to fix this would
be appreciated.

-- 
Joel Sherrill, Ph.D.             Director of Research & Development
joel.sherrill at OARcorp.com        On-Line Applications Research
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