mail-filter/scmail: fix parallel build

Closes: https://bugs.gentoo.org/882513
Closes: https://bugs.gentoo.org/884759
Signed-off-by: Akinori Hattori <hattya@gentoo.org>

mail-filter/scmail/files/scmail-parallel-make.patch

@@ -0,0 +1,19 @@
+--- a/Makefile
++++ b/Makefile
+@@ -24,7 +24,7 @@
+ 
+ all: check-gauche $(TARGET) update-doc
+ 
+-update-doc:
++update-doc: dot.scmail/deliver-rules.sample
+ 	cd doc && make
+ 
+ check-gauche:
+--- a/tests/Makefile
++++ b/tests/Makefile
+@@ -41,3 +41,5 @@
+ 	@rm -f $(TARGET)
+ 	@rm -rf Mail Maildir test.*
+ 
++.NOTPARALLEL:
++

mail-filter/scmail/scmail-1.3.ebuild

@@ -1,4 +1,4 @@
-# Copyright 1999-2022 Gentoo Authors
+# Copyright 1999-2024 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI="8"
@@ -21,6 +21,7 @@ PATCHES=(
 	"${FILESDIR}"/${PN}-doc-encoding.patch
 	"${FILESDIR}"/${PN}-gauche-0.9.patch
 	"${FILESDIR}"/${PN}-gauche-0.9.10.patch
+	"${FILESDIR}"/${PN}-parallel-make.patch
 	"${FILESDIR}"/${PN}-undefined-reference.patch
 )
 HTML_DOCS=( doc/{${PN},scbayes}{,-ja}.html )
@@ -41,7 +42,3 @@ src_install() {
 		install
 	einstalldocs
 }
-
-src_test() {
-	emake -j1 -s check
-}