NUTCH-3095 Update .gitignore to ignore Hadoop native libraries

Author: sebastian-nagel

.gitignore

@@ -27,3 +27,10 @@ ivy/dependency-check-ant/*
 .gradle*
 ivy/apache-rat-*
 .vscode
+# native Hadoop libraries, see lib/native/README.txt
+lib/native/libhadoop.*
+lib/native/libhadooppipes.*
+lib/native/libhadooputils.*
+lib/native/libhdfs.*
+lib/native/libhdfspp.*
+lib/native/libnativetask.*