Remove ntlm_smb_lm_auth helper

Our implementation of NTLM is based on an old snapshot
and adaptation of Samba code. It's more secure to rely
on the actively maintained tooling offered by Samba.

configure.ac

@@ -2547,7 +2547,6 @@ AC_CONFIG_FILES([
 	src/auth/negotiate/wrapper/Makefile
 	src/auth/ntlm/Makefile
 	src/auth/ntlm/fake/Makefile
-	src/auth/ntlm/SMB_LM/Makefile
 	src/auth/ntlm/SSPI/Makefile
 	src/base/Makefile
 	src/clients/Makefile

doc/release-notes/release-8.sgml.in

@@ -39,6 +39,8 @@ The Squid-@SQUID_RELEASE@ change history can be <url url="https://github.com/squ
 	<p>Removed <em>ext_lm_group_acl</em> external acl helper. No product
 	   currently on the market suports the LanManager protocol
 	   in their default configuration.
+	<p>Removed <em>ntlm_smb_lm_auth</em> NTLM authentication helper.
+	   Use the <em>html_auth</em> helper from the Samba project instead.
 
 </descrip>
 
@@ -103,6 +105,10 @@ This section gives an account of those changes in three categories:
 	<p>Removed <em>LM_Group</em> helper. The LM protocol is
 	   insecure and no longer supported on the market since 2008.
 
+	<tag>--enable-auth-ntlm=</tag>
+	<p>Removed <em>SMB_LM</em> helper, in favour of the <em>ntlm_auth</em>
+	   alternative offered by the Samba project.
+
 </descrip>
 </p>
 

src/auth/ntlm/Makefile.am

@@ -9,7 +9,6 @@ include $(top_srcdir)/src/Common.am
 
 DIST_SUBDIRS = \
 	fake \
-	SMB_LM \
 	SSPI
 SUBDIRS= $(NTLM_AUTH_HELPERS)
 EXTRA_DIST= helpers.m4