pgsql: Remove HELIOS Software GmbH name and copyright from AIX dynloader

Log Message:
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Remove HELIOS Software GmbH name and copyright from AIX dynloader files,
per approval from Helmut Tschemernjak, President.

Only back branches; files removed from CVS HEAD.

Tags:
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REL8_3_STABLE

Modified Files:
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pgsql/src/backend/port/dynloader:
README.dlfcn.aix (r1.2 -> r1.2.18.1)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/port/dynloader/README.dlfcn.aix?r1=1.2&r2=1.2.18.1)
aix.c (r1.19 -> r1.19.2.1)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/port/dynloader/aix.c?r1=1.19&r2=1.19.2.1)
aix.h (r1.13 -> r1.13.6.1)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/port/dynloader/aix.h?r1=1.13&r2=1.13.6.1)