Adds complete lang/tr files for four more previously untranslated
modules and removes their machine-generated lang/tr.auto files:
ldap-client 226 strings - NSS/PAM LDAP client setup and NSS switch
dovecot 188 strings - Dovecot IMAP/POP3 server configuration
filemin 185 strings - file manager UI
package-updates 176 strings - package update checking and repositories
Product names are deliberately left untranslated where Turkish has no
established equivalent: "Novell Directory Services", "Active Directory",
"System Security Services", "Hesiod", "XFN", "VPOPMail", "Blastwave".
Protocol, format and command names (IMAP, POP3, LMTP, SASL, Maildir,
mbox, dbox, chmod, chown, chattr, setfacl, umask, tar.gz) also stay in
English, matching the rest of the Turkish translation.
