Normalize XML Whitespace

Normalize whitespace in project XML files (e.g. pom.xml), to two-spaces
per indentation level.
Cleanup rewriter error messages for user-defined functions

Change-Id: Ic06e3ff4431508d878e0cc614fbf957887a3c682
Reviewed-on: https://asterix-gerrit.ics.uci.edu/836
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: abdullah alamoudi <bamousaa@gmail.com>
diff --git a/hyracks-fullstack/algebricks/algebricks-rewriter/pom.xml b/hyracks-fullstack/algebricks/algebricks-rewriter/pom.xml
index f1333a5..80cb967 100644
--- a/hyracks-fullstack/algebricks/algebricks-rewriter/pom.xml
+++ b/hyracks-fullstack/algebricks/algebricks-rewriter/pom.xml
@@ -38,15 +38,14 @@
   </licenses>
 
   <properties>
-      <root.dir>${basedir}/../..</root.dir>
+    <root.dir>${basedir}/../..</root.dir>
   </properties>
 
-
   <dependencies>
-  	<dependency>
-  		<groupId>org.apache.hyracks</groupId>
-  		<artifactId>algebricks-core</artifactId>
-  		<version>0.2.18-SNAPSHOT</version>
-  	</dependency>
+    <dependency>
+      <groupId>org.apache.hyracks</groupId>
+      <artifactId>algebricks-core</artifactId>
+      <version>0.2.18-SNAPSHOT</version>
+    </dependency>
   </dependencies>
 </project>