Attempt to set the proper uid/gid/contexts on new files and dirs

Files and folders that we create during backups, copy log, or MTP
operations often do not have the proper uid/gid/contexts assigned.
We will attempt to read the proper contexts from the settings
storage path and assign those same contexts to any files or dirs
that we create.

Change-Id: I769f9479854122b49b499de2175e6e2d026f8afd

twrpDigest.cpp

@@ -40,6 +40,7 @@ extern "C"
 #include "variables.h"
 #include "twrp-functions.hpp"
 #include "twrpDigest.hpp"
+#include "set_metadata.h"
 
 using namespace std;
 
@@ -79,6 +80,7 @@ int twrpDigest::write_md5digest(void) {
 	md5string += basename((char*) md5fn.c_str());
 	md5string +=  + "\n";
 	TWFunc::write_file(md5file, md5string);
+	tw_set_default_metadata(md5file.c_str());
 	LOGINFO("MD5 for %s: %s\n", md5fn.c_str(), md5string.c_str());
 	return 0;
 }