Remove ./configure's --enable-debug.

It no longer does anything after #42.

autogen.sh

@@ -4,10 +4,10 @@ autoreconf -fi
 
 if [ "$1" == "-d" ]; then
 	shift;
-	echo "Running configure --enable-debug (but not --enable-debug-output)"
+	echo "Running ./configure"
 	echo
 	sleep 1s
-	./configure --enable-debug "$@"
+	./configure "$@"
 elif [ -n "$1" ]; then
 	echo
 	echo "./configure $@"

configure.ac

@@ -8,8 +8,6 @@ AC_LANG(C)
 AC_PROG_LIBTOOL
 
 # --enable and --with options
-AC_ARG_ENABLE([debug],
-    [AS_HELP_STRING([--enable-debug], [enable debug symbols])])
 AC_ARG_ENABLE([debug-output],
     [AS_HELP_STRING([--enable-debug-output], [enable debug output])])
 AC_ARG_WITH([core-foundation],