syntax/comment touchups

#!/bin/sh

if [ -x /usr/bin/sed ]; then 

    SED="/usr/bin/sed";

# Make sure the host sed supports '-i' (in-place).

# If it doesn't, we'll build and use our own.

if test -x /usr/bin/sed ; then

	SED="/usr/bin/sed"

else

	if test -x /bin/sed ; then

		SED="/bin/sed"

	else

    if [ -x /bin/sed ]; then 

	SED="/bin/sed";

    fi;

fi;

		SED="sed"

	fi

fi

echo "HELLO" > .sedtest

$SED -i -e "s/HELLO/GOODBYE/" .sedtest >/dev/null 2>&1

if [ $? != 0 ] ; then

if test $? != 0 ; then

	echo build-sed-host-binary

else

	echo use-sed-host-binary

fi;

rm -f .sedtest

fi

rm -f .sedtest