pcscd.if: Permit access to pid files inside /var/run/pcscd/.

Gentoo places pcscd's pid file in /var/run/pcscd/ instead of /var/run/,
but pcscd_read_pid_files() doesn't grant enough permissions for this.
Allow gpg-agent's scdaemon to connect to pcscd.
Module version bump for pcscd fix from Luis Ressel.
Use xattr-labeling for squashfs.

This is taken from the Fedora policy (authors: Dan Walsh, Miroslav
Grepl) and dates back to 2011 there.
Label fatsort as fsadm_exec_t.

FATsort is an utility to sort directory entries on FAT partitions, see
http://fatsort.sourceforge.net/ . It requires direct access to the
block devices.
Merge with upstream
Update comment and remove whitespace (thanks to Luis Ressel)