net-fs/samba: do not install python DSDB bits when USE=-addc

If ADDC is disabled, samba-4.8.6 was still installing python module
smbd_dns.so , which links to libdnsserver-common-samba4.so but the
latter is NOT installed.  This causes infinite revdep-rebuild errors.

This commit patches the build system to prevent said file from being
installed.  Bumped directly to stable by maintainers.

Signed-off-by: Ian Stakenvicius <[email protected]>
Package-Manager: Portage-2.3.49, Repoman-2.3.11

net-fs/samba/files/samba-4.8.6-no-pydsdb-when-no-addc.patch

@@ -0,0 +1,36 @@
+Do not install the python DSDB modules when ADDC is disabled.
+This is a change integrated upstream in 4.9.1 (or earlier).
+
+Without this, the python dsdb_dns.so module is installed, which
+is linked to libdnsserver-common.so that is NOT installed, and so
+potential breakage ensues.
+
+--- a/source4/dsdb/wscript_build	2018-01-17 03:08:39.000000000 -0500
++++ b/source4/dsdb/wscript_build	2018-11-08 10:43:58.064486832 -0500
+@@ -63,10 +63,11 @@
+ 	)
+
+ bld.SAMBA_PYTHON('python_dsdb',
+ 	source='pydsdb.c',
+ 	# the dependency on dcerpc here is because gensec
+ 	# depends on dcerpc but the waf circular dependency finder
+ 	# removes it so we end up with unresolved symbols.
+ 	deps='samdb pyldb-util dcerpc com_err pyrpc_util pyparam_util dsdb_garbage_collect_tombstones',
+-	realname='samba/dsdb.so'
++	realname='samba/dsdb.so',
++	enabled=bld.AD_DC_BUILD_IS_ENABLED()
+ 	)
+--- a/source4/dns_server/wscript_build	2018-11-08 11:49:03.450296286 -0500
++++ b/source4/dns_server/wscript_build	2018-11-08 11:49:23.327864408 -0500
+@@ -64,9 +64,10 @@
+                   private_library=True,
+                   deps='samba-hostconfig samdb-common gensec popt dnsserver_common',
+                   enabled=bld.AD_DC_BUILD_IS_ENABLED())
+
+
+ bld.SAMBA_PYTHON('python_dsdb_dns',
+ 	         source='pydns.c',
+ 	         deps='samdb pyldb-util pyrpc_util dnsserver_common pytalloc-util',
+-	         realname='samba/dsdb_dns.so')
++	         realname='samba/dsdb_dns.so',
++	         enabled=bld.AD_DC_BUILD_IS_ENABLED())