security/p5-openxpki-i18n: Fix build

Add MAKE_JOBS_UNSAFE=yes due to race conditions during build.
While at it do some minor adjustments to Makefile.

PR:		279058
Approved by:	submitter is maintainer, diizzy (mentor)

security/p5-openxpki-i18n/Makefile

@@ -16,10 +16,12 @@ LICENSE_FILE=	${WRKSRC}/../../LICENSE
 USES=		gettext-runtime gettext-tools gmake perl5
 
 USE_GITHUB=	yes
+MAKE_JOBS_UNSAFE=	yes
 
 ALL_TARGET=	scan default
 NO_ARCH=	yes
-# stay with stable versions only:
+
+# Track stable versions.
 PORTSCOUT=	limitw:1,even
 
 WRKSRC_SUBDIR=	core/i18n