krb5: Make the build a bit quieter

compile_et.sh is run during buildworld and prints a bunch of debug
output.  It's intrusive and probably not needed, at least by default, so
let's make the build output a bit cleaner.  This is an upstream script,
but it hasn't been modified in 15 years so the local modification is
unlikely to cause any pain.

Also remove a print that shows up in buildworld -s output.

Reviewed by:	cy
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D55317

crypto/krb5/src/util/et/compile_et.sh

@@ -30,7 +30,7 @@ fi
 ROOT=`echo $1 | sed -e s/.et$//`
 BASE=`echo "$ROOT" | sed -e 's;.*/;;'`
 
-set -ex
+set -e
 $AWK -f ${DIR}/et_h.awk "outfile=${BASE}.h" "$ROOT.et"
 $AWK -f ${DIR}/et_c.awk "outfile=${BASE}.c" "textdomain=$TEXTDOMAIN" \
     "localedir=$LOCALEDIR" "$ROOT.et"

krb5/lib/gssapi/generic/Makefile.inc

@@ -42,7 +42,6 @@ CLEANFILES+=	gssapi.h ${GGEN} ${GGENI}
 INCLUDE_XOM=	echo "/* no xom.h */"
 
 gssapi.h:	gssapi.hin
-	echo "Creating gssapi.h" ; \
 	h=gss$$$$; rm -f $$h; \
 	(echo "/* This is the gssapi.h prologue. */"; \
 	${INCLUDE_XOM} && \