Unify and clean up resize arguments

Unifies the command line arguments for resize and superes.
Removes resize arguments that are currently unused.

Change-Id: I1362dffceb8257cee539f92679d1e8d79df08e66

test/active_map_test.cc

diff --git a/test/active_map_test.cc b/test/active_map_test.cc
index e38aa17..318a851 100644
--- a/test/active_map_test.cc
+++ b/test/active_map_test.cc
@@ -73,7 +73,7 @@
     // Validate that this non multiple of 64 wide clip encodes
     cfg_.g_lag_in_frames = 0;
     cfg_.rc_target_bitrate = 400;
-    cfg_.rc_resize_allowed = 0;
+    cfg_.rc_resize_mode = 0;
     cfg_.g_pass = AOM_RC_ONE_PASS;
     cfg_.rc_end_usage = AOM_CBR;
     cfg_.kf_max_dist = 90000;