libpqtypes - libpqtypes: updated ChangeLog and INSTALL files

Log Message:
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updated ChangeLog and INSTALL files

Modified Files:
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libpqtypes:
ChangeLog (r1.4 -> r1.5)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/ChangeLog.diff?r1=1.4&r2=1.5)
INSTALL (r1.3 -> r1.4)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/INSTALL.diff?r1=1.3&r2=1.4)
configure.ac (r1.6 -> r1.7)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/configure.ac.diff?r1=1.6&r2=1.7)