Added svn export failure detection to build script.

Development/QHBuild.sh

@@ -85,6 +85,15 @@ fi
 echo Exporting files.
 svn $command
 
+if [ $? -ne 0 ]
+then
+	echo Build fails. Cleaning up.
+	cd ..
+	rm -rvf build
+	echo "Build failed. Repository export failed."
+	return 1
+fi
+
 cd build
 
 release_string=${version}${release}
@@ -97,6 +106,7 @@ then
   cd ..
   rm -rvf build
   echo Build failed. Unknown locale.
+  return 1
 fi
 
 echo Replacing version tag and creating package.