GNU_CONFIGURE: Fix ax_am_jobserver usage to respect MAKE_JOBS_NUMBER.

PR:		217670 [exp-run]
With hat:	portmgr

Mk/bsd.port.mk

@@ -2560,6 +2560,9 @@ SET_LATE_CONFIGURE_ARGS= \
 	if [ ! -z "`${CONFIGURE_CMD} --help 2>&1 | ${GREP} -- '--disable-silent-rules'`" ]; then \
 	    _LATE_CONFIGURE_ARGS="$${_LATE_CONFIGURE_ARGS} --disable-silent-rules" ; \
 	fi ; \
+	if [ ! -z "`${CONFIGURE_CMD} --help 2>&1 | ${GREP} -- '--enable-jobserver\[.*\#\]'`" ]; then \
+	    _LATE_CONFIGURE_ARGS="$${_LATE_CONFIGURE_ARGS} --enable-jobserver=${MAKE_JOBS_NUMBER}" ; \
+	fi ; \
 	if [ ! -z "`${CONFIGURE_CMD} --help 2>&1 | ${GREP} -- '--infodir'`" ]; then \
 	    _LATE_CONFIGURE_ARGS="$${_LATE_CONFIGURE_ARGS} --infodir=${GNU_CONFIGURE_PREFIX}/${INFO_PATH}/${INFO_SUBDIR}" ; \
 	fi ; \

databases/libmemcached/Makefile

@@ -21,7 +21,6 @@ USE_LDCONFIG=	yes
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS=	--without-memcached \
 		--without-sphinx-build \
-		--enable-jobserver=${MAKE_JOBS_NUMBER} \
 		--enable-libmemcachedprotocol
 
 LIBS+=		-L${LOCALBASE}/lib -lexecinfo