Added Binary Preclustered Group Operator. Preclustered and Hash based group operators now use the same aggregator interface. Added a Frame Writing Operator.

git-svn-id: https://hyracks.googlecode.com/svn/trunk/hyracks@132 123451ca-8445-de46-9d55-352943316053
diff --git a/hyracks-examples/text-example/.project b/hyracks-examples/text-example/.project
new file mode 100644
index 0000000..4e057cd
--- /dev/null
+++ b/hyracks-examples/text-example/.project
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>text-example</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.maven.ide.eclipse.maven2Builder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.maven.ide.eclipse.maven2Nature</nature>
+	</natures>
+</projectDescription>