Update .gitignore to include more userspace programs.

Signed-off-by: Anton Protopopov <a.s.protopopov@gmail.com>

Author: aspsk

.gitignore

@@ -53,5 +53,15 @@ Module.symvers
 Mkfile.old
 dkms.conf
 
-# The xdp_loader program
+# Userspace programs
 xdp_loader
+xdp_stats
+xdp_pass_user
+xdp_load_and_stats
+xdp_prog_user
+
+# tracing userspace programs
+trace_load_and_stats
+trace_load_and_stats
+trace_read
+xdp_sample_pkts_user