INSTALL.AIX: Added newer comments from Dan S.
INSTALL.AIX: Added newer comments from Dan S.

OPENDAP/libdap4,OPENDAP/libdap,OPENDAP/libdap,OPENDAP/libdap4,OPENDAP/libdap4,OPENDAP/libdap4,OPENDAP/libdap4,OPENDAP/libdap,OPENDAP/libdap,OPENDAP/libdap4