Remove build specific details from sendmail.cf/submit.cf in support of

https://wiki.freebsd.org/ReproducibleBuilds

The contrib/sendmail change will be made in the upstream source for a
future sendmail release.

Reviewed by:	des
MFC after:	3 days

contrib/sendmail/cf/m4/cfhead.m4

@@ -20,7 +20,7 @@
 ifdef(`__win32__', `dnl', `dnl
 ifdef(`TEMPFILE', `dnl', `define(`TEMPFILE', maketemp(/tmp/cfXXXXXX))dnl
 syscmd(sh _CF_DIR_`'sh/makeinfo.sh _CF_DIR_ > TEMPFILE)dnl
-include(TEMPFILE)dnl
+ifdef(`_NO_MAKEINFO_',, `include(TEMPFILE)')dnl
 syscmd(rm -f TEMPFILE)dnl')')
 #####
 ######################################################################

etc/sendmail/Makefile

@@ -17,7 +17,8 @@ M4FILES!=	find ${SENDMAIL_CF_DIR} -type f -name '*.m4' -print
 
 .mc.cf: ${M4FILES}
 	${RM} ${.TARGET}
-	${M4} -D_CF_DIR_=${SENDMAIL_CF_DIR}/ ${SENDMAIL_M4_FLAGS} \
+	${M4} -D_CF_DIR_=${SENDMAIL_CF_DIR}/ -D_NO_MAKEINFO_ \
+	    ${SENDMAIL_M4_FLAGS} \
 	    ${SENDMAIL_CF_DIR}/m4/cf.m4 ${.IMPSRC} > ${.TARGET}
 	${CHMOD} ${ROMODE} ${.TARGET}