Adding pgbouncer transaction patch.

Originally from http://treehou.se/~omar/postgresql-jdbc-8.4-701-pgbouncer_txn.patch
Consider search_path when resolving type names to OIDs

In case when types with the same name existed in several schemas,
TypeInfoCache did not consider the current search_path and was choosing
an OID of a type not deterministically. These change will make
the type from the current schema to be chosen. Also this change remains
backwards compatible with the previous implementation, still being anble
to find a type, that is not included into the current search_path.

Provided test fails now, as it does not TypeInfoCache
directly. So more work is to be done to make this test work.
Test is checking search_path usage dirctly on TypeInfo methods
search_path support should be working correctly even for complex cases
Added another test case for searching objects using search_path
modified build for maven and 9.3
Merge pull request #57 from davecramer/master

Build for maven
Merge branch 'pgbouncer-txn' of git://github.com/deafbybeheading/pgjdbc
Merge pull request #58 from davecramer/master

pgbouncer transaction patch
support for materialized views from Thomas Kelllerer
Merge pull request #59 from davecramer/master

support for materialized views from Thomas Kellerer
expose URL property in BaseDataSource
make sure stringtype gets into url from properties
Merge pull request #61 from davecramer/master

expose URL in BaseDataSource
Merge branch 'master' of github.com:davecramer/pgjdbc
Merge branch 'master' of github.com:pgjdbc/pgjdbc
Merge pull request #52 from valgog/master

Consider search_path when looking up type OIDs in TypeInfoCache
Ignore netbeans and IDEA projects files.
Respect the ${srcdir} property for all source file references in ant script.

This makes it possible to restructure the build (in the future?) so that source and artifact files (.java and .class) are not intermingled in the same directories on disk.
Merge pull request #64 from polarislabs/respect_ant_srcdir

Respect ant srcdir
Merged upstream branch into local master. Resolved conflict in pom.xml.