pluginscanner: Selinux enhanced file rights not handled correctly

Submitted by kas..@..ain.de

Description

Following steps to reproduce

Installing Fluendo Code package
Enable Selinux
run gst-inspect-1.0
now all newy added codecs are blacklisted because we have not relabled the new installation
Disable Selinux
run gst-inspect will not change anything because files are unchanged and already on blacklist

Only deleting the registry would help.

Correct handling would be in
gst/gstregistry.c in function gst_registry_scan_path_level

and add in the checks for regular file

if (access(filename,X_OK)!=0) {
GST_TRACE_OBJECT (context->registry, "%s file status SeLinux executable file, ignoring",
filename);
g_free (filename);
continue;
}

So we check if the file is executable ( normal file rights and SeLinux). If not executable we just ignore it.
Tested on Linux it is working.