Database management changes

* Added in-base logging through a foreign data wrapper, which is only
possible using PostgreSQL 9.1
* Renamed database-related configuration files to indicate that they are
samples, and added the "real" names to the Git ignore list. Server
distribution modified accordingly.
* Removed PL/PgSQL registration (it was only necessary on 8.4)
* Added pgTAP SQL definitions and a script which will (hopefully) be
executed by the build system after the main Java build in order to
execute database unit tests. The script supports both admin- and user-
level testing. I also added a few tests to make sure the testing framework
actually runs them.
* Added documentation about the database definitions structure

legacyworlds-server-DIST/src/server.xml

@@ -46,13 +46,9 @@
 			<directory>../legacyworlds-server-data/db-structure</directory>
 			<outputDirectory>sql</outputDirectory>
 			<includes>
-				<include>*.sql</include>
-				<include>*/*.sql</include>
-				<include>*/*/*.sql</include>
+				<include>**.sql</include>
+				<include>db-config.sample.txt</include>
 			</includes>
-			<excludes>
-				<exclude>*.txt</exclude>
-			</excludes>
 		</fileSet>
 
 		<!-- Default data -->
@@ -71,21 +67,12 @@
 
 		<!-- Data source configuration -->
 		<file>
-			<source>../legacyworlds-server-main/data-source.xml</source>
-			<destName>data-source.sample.xml</destName>
+			<source>../legacyworlds-server-main/data-source.sample.xml</source>
 			<fileMode>0600</fileMode>
 			<outputDirectory>.</outputDirectory>
 		</file>
 		
-		<!-- Database definition variables -->
-		<file>
-			<source>../legacyworlds-server-data/db-structure/db-config.txt</source>
-			<destName>db-config.sample.txt</destName>
-			<fileMode>0600</fileMode>
-			<outputDirectory>sql</outputDirectory>
-		</file>
-
 	</files>
 
 
-</assembly>
+</assembly>