mail-mta/exim: bump stable release to include SLOT dep for opendmarc

Unfortunately opendmarc broke their API without telling, and we need to
ensure Exim instances are rebuilt that link against an upgraded
opendmarc.  Also, need to ensure that once opendmarc-1.4 goes stable,
Exim is properly rebuilt.  Unfortunately this requires a conditional
patch, so we're all extremely unhappy here.

Closes: https://bugs.gentoo.org/788343
Package-Manager: Portage-3.0.18, Repoman-3.0.2
RepoMan-Options: --force
Signed-off-by: Fabian Groffen <grobian@gentoo.org>

mail-mta/exim/exim-4.94.2-r1.ebuild

@@ -69,7 +69,7 @@ COMMON_DEPEND=">=sys-apps/sed-4.0.5
 	sasl? ( >=dev-libs/cyrus-sasl-2.1.26-r2 )
 	redis? ( dev-libs/hiredis )
 	spf? ( >=mail-filter/libspf2-1.2.5-r1 )
-	dmarc? ( mail-filter/opendmarc )
+	dmarc? ( mail-filter/opendmarc:= )
 	srs? ( srs-alt? ( mail-filter/libsrs_alt ) )
 	X? (
 		x11-libs/libX11
@@ -117,6 +117,12 @@ src_prepare() {
 	eapply     "${FILESDIR}"/exim-4.69-r1.27021.patch
 	eapply     "${FILESDIR}"/exim-4.94-localscan_dlopen.patch
 
+	# for this reason we have a := dep on opendmarc, they changed their
+	# API in a minor release
+	if use dmarc && has_version ">=mail-filter/opendmarc-1.4" ; then
+		eapply "${FILESDIR}"/exim-4.94-opendmarc-1.4.patch
+	fi
+
 	if use maildir ; then
 		eapply "${FILESDIR}"/exim-4.94-maildir.patch
 	else

mail-mta/exim/files/exim-4.94-opendmarc-1.4.patch

@@ -0,0 +1,14 @@
+https://bugs.exim.org/show_bug.cgi?id=2728
+
+
+--- a/src/dmarc.c
++++ b/src/dmarc.c
+@@ -446,7 +446,7 @@
+ 		  vs == PDKIM_VERIFY_INVALID ? DMARC_POLICY_DKIM_OUTCOME_TMPFAIL :
+ 		  DMARC_POLICY_DKIM_OUTCOME_NONE;
+     libdm_status = opendmarc_policy_store_dkim(dmarc_pctx, US sig->domain,
+-					       dkim_result, US"");
++					       sig->selector, dkim_result, US"");
+     DEBUG(D_receive)
+       debug_printf("DMARC adding DKIM sender domain = %s\n", sig->domain);
+     if (libdm_status != DMARC_PARSE_OKAY)