MAKEFILE: Mailing bug

The following is taken verbatim from the debian git repo:

Bugs-Ubuntu: https://bugs.launchpad.net/ubuntu/+source/rancid/+bug/909877
Description: rancid's downreport script sends an email to the configured email
 address for each router group. After installation, the script should send
 reports to either "rancid-admin-<groupname>" or "rancid+admin-<groupname>",
 depending on how the installation was configured. Instead, it sends to
 "@MailPlus@admin-<groupname>".
 .
 Looks like configuring/compiling the package doesn't replace the MAILPLUS
 variable at line 76 in the downreport script found at
 /var/lib/rancid/downreport.
Origin: https://launchpadlibrarian.net/88737434/rancid-2.3.6-downreport.patch

share/Makefile.am

@@ -70,7 +70,8 @@ auto_edit = sed \
 	-e 's,@localstatedir\@,$(localstatedir),g' \
 	-e 's,@sysconfdir\@,$(sysconfdir),g' \
 	-e 's,@pkgdatadir\@,$(pkgdatadir),g' \
-    -e 's,@MAILPLUS\@,$(MAILPLUS),g'
+	-e 's,@ADMINMAILPLUS\@,$(ADMINMAILPLUS),g' \
+	-e 's,@MAILPLUS\@,$(MAILPLUS),g'
 
 downreport: Makefile $(srcdir)/downreport.in
 	rm -f downreport downreport.tmp; \