Extend recovery and updater to support setting file security contexts.

Extend minzip, recovery, and updater to set the security context on
files based on the file_contexts configuration included in the package.

Change-Id: Ied379f266a16c64f2b4dca15dc39b98fcce16f29
diff --git a/roots.c b/roots.c
index cb7e067..f4a256f 100644
--- a/roots.c
+++ b/roots.c
@@ -31,6 +31,8 @@
 static int num_volumes = 0;
 static Volume* device_volumes = NULL;
 
+struct selabel_handle *sehandle;
+
 static int parse_options(char* options, Volume* volume) {
     char* option;
     while (option = strtok(options, ",")) {
@@ -269,7 +271,7 @@
     }
 
     if (strcmp(v->fs_type, "ext4") == 0) {
-        int result = make_ext4fs(v->device, v->length);
+        int result = make_ext4fs(v->device, v->length, volume, sehandle);
         if (result != 0) {
             LOGE("format_volume: make_extf4fs failed on %s\n", v->device);
             return -1;