update gitignore files

src/examples/.gitignore

@@ -31,3 +31,4 @@
 /https_echo_server_example.c
 /https_echo_client_example.c
 /authorization_example
+upgrade_example

src/microhttpd/.gitignore

@@ -41,3 +41,4 @@
 /postprocessor_test
 /gmon.out
 *.exe
+test_upgrade_tls

src/testcurl/.gitignore

@@ -102,3 +102,5 @@
 /daemontest_post_loop
 /daemontest_get11
 *.exe
+test_quiesce_stream
+test_large_put_inc11