Merge pull request #146 from davecramer/REL9_3_STABLE

backpatch fix for changing datestyle before copy
setNull, setString, setObject may fail if a specified type cannot be transfered in a binary mode #151
NullPointerException in AbstractJdbc2DatabaseMetaData.getUDTs
Fix from Elizabeth Chatman
Added caching for ResultSetMetaData from Christophe Canovas
Added caching for ResultSetMetaData from Christophe Canovas complete commit
backpatch exception during close of fully read stream from romank0
fix copyOut close hanging bug #161 from epgrubmair
incremented build number updated copyright to 2014
udpated build.properties for version 1102
reverted use DSTSavings when converting to timestamp see #133
NPE fix in org.postgresql.Driver.getPropertyInfo #176 \
from Sergey Ignatov
Handle null value

Conflicts:
	org/postgresql/util/PGobject.java
Merge pull request #183 from nicolas-f/fix/hashcode_pgobject_93

Implement hashcode in PGObject 9.3
Don't prevented VM shutdown if ConnectThread is blocked
backpatched Statement.isClosed() implementation of PGPoolingDataSource with some performance improvements. #180
minor cleanups which supposed not to change logic, but
make code cleaner. pull #184
Clob will now use the connection encoding
pull #121 from brekka/clob_encoding
revert back to new String("NULL")
Fixed timezone test as per Tom Lane's suggestion. …
Now using Europe/Helsinki as the exemplar.
Add support for "currentSchema" connection property.