pgfiledump - pg_filedump: Assorted adjustments to prepare pg_filedump

Log Message:
-----------
Assorted adjustments to prepare pg_filedump for its new life.

Add PostgreSQL Global Development Group to the copyright notices, and
remove a couple of no-longer-appropriate references to Red Hat.
Unfortunately I can't undo Red Hat's choice of GPL licensing, but it is
what it is.

Also reduce the pain of version-stamping by coalescing references to the
version into one pair of macros, and removing not-especially-useful
change logs.  IMO the commit logs serve that purpose just as well.

Modified Files:
--------------
    pg_filedump:
        Makefile (r1.1.1.1 -> r1.2)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgfiledump/pg_filedump/Makefile?r1=1.1.1.1&r2=1.2)
        README.pg_filedump (r1.1.1.1 -> r1.2)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgfiledump/pg_filedump/README.pg_filedump?r1=1.1.1.1&r2=1.2)
        pg_filedump.c (r1.1.1.1 -> r1.2)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgfiledump/pg_filedump/pg_filedump.c?r1=1.1.1.1&r2=1.2)
        pg_filedump.h (r1.1.1.1 -> r1.2)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgfiledump/pg_filedump/pg_filedump.h?r1=1.1.1.1&r2=1.2)

Removed Files:
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    pg_filedump:
        ChangeLog
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgfiledump/pg_filedump/ChangeLog)