Merge pull request #278 from mikedilger/master

ignore upcall program variants
diff --git a/.gitignore b/.gitignore
index 4a38013..d52b9ae 100644
--- a/.gitignore
+++ b/.gitignore
@@ -56,15 +56,21 @@
 
 # binaries
 programs/client
+programs/client_upcall
 programs/daytime_server
+programs/daytime_server_upcall
 programs/discard_server
+programs/discard_server_upcall
 programs/echo_server
+programs/echo_server_upcall
 programs/ekr_client
 programs/ekr_loop
 programs/ekr_loop_offload
+programs/ekr_loop_upcall
 programs/ekr_peer
 programs/ekr_server
 programs/http_client
+programs/http_client_upcall
 programs/rtcweb
 programs/tsctp
 programs/test_libmgmt