Fixed "src/configure".

(Turns out that editing configure by hand is not a good idea...)

Also a random racket comment.

src/configure

@@ -9600,7 +9600,7 @@ LIBOBJS!$LIBOBJS$ac_delim
 LTLIBOBJS!$LTLIBOBJS$ac_delim
 _ACEOF
 
-  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 46; then
+  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 45; then
     break
   elif $ac_last_try; then
     { { echo "$as_me:$LINENO: error: could not make $CONFIG_STATUS" >&5

src/racket/make-configure

@@ -14,7 +14,7 @@ exit 0
 |#
 
 ;; When autoconf produces `configure', it includes many
-;;  options that do not apply to PLT software. We want to
+;;  options that do not apply to Racket.  We want to
 ;;  get rid of them, so that `configure --help' produces
 ;;  valid information.
 ;; In addition, we want none of the feature-selection flags