build: switch over to file_contexts.bin only

Change all uses of the file_contexts file to use the
file_contexts.bin file instead.

Depends on
   I75a781100082c23536f70ce3603f7de42408b5ba
   I43806d564b83d57f05f5c36c8eba7b1ff4831b04
   Id560d093440a2aba99cef28c20133b35feebf950
   I15660f4b3e4c5cb8ae0ec1498c74d6fcbb9a0400

Change-Id: Iaf8c4b2e420f610425a07f48db7af32bda3f5b3a
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
diff --git a/tools/releasetools/ota_from_target_files.py b/tools/releasetools/ota_from_target_files.py
index 69987ab..9080159 100755
--- a/tools/releasetools/ota_from_target_files.py
+++ b/tools/releasetools/ota_from_target_files.py
@@ -588,8 +588,8 @@
   if HasVendorPartition(input_zip):
     system_progress -= 0.1
 
-  # Place a copy of file_contexts into the OTA package which will be used by
-  # the recovery program.
+  # Place a copy of file_contexts.bin into the OTA package which will be used
+  # by the recovery program.
   if "selinux_fc" in OPTIONS.info_dict:
     WritePolicyConfig(OPTIONS.info_dict["selinux_fc"], output_zip)