SQOOP-1339: Synchronize .gitignore files

(Abraham Elmahrek via Jarek Jarcec Cecho)

.gitignore

@@ -1,12 +1,31 @@
-.classpath
-.project
-.settings
-target
-*.iml
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
 *.eml
-*.log
-.idea
+*.iml
 *.ipr
 *.iws
+*.log
+*~
+.classpath
+.idea
+.project
+.settings
 nb-configuration.xml
 patch-process
+target
+
+# Sqoop2 specific