libpqtypes - libpqtypes: Updated ChangeLog, added changes since v1.2e

Log Message:
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Updated ChangeLog, added changes since v1.2e release

Modified Files:
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libpqtypes:
ChangeLog (r1.10 -> r1.11)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/ChangeLog.diff?r1=1.10&r2=1.11)
libpqtypes/src:
error.c (r1.14 -> r1.15)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/error.c.diff?r1=1.14&r2=1.15)