type cache info fix

I found that type cache info wasn't honoring search path. (I had a
UDT type that shared a name with a table).

This fixed it.

diff --git a/org/postgresql/jdbc2/TypeInfoCache.java
b/org/postgresql/jdbc2/TypeInfoCache.java
index 2e79758..2d26fd0 100644
--- a/org/postgresql/jdbc2/TypeInfoCache.java
+++ b/org/postgresql/jdbc2/TypeInfoCache.java
@@ -234,7 +234,7 @@ public class TypeInfoCache implements TypeInfo {
if (_getOidStatement == null) {
String sql;
if (_conn.haveMinimumServerVersion("7.3")) {
- sql = "SELECT oid FROM pg_catalog.pg_type WHERE typname = ?";
+ sql = "SELECT ?::regtype::oid";
} else {
sql = "SELECT oid FROM pg_type WHERE typname = ?";
}