Always enable assertions in embedded lightning

* libguile/lightning/configure.ac: Remove --enable-assertions option;
  always enable assertions.
* libguile/lightning/lib/jit_memory.c:
* libguile/lightning/lib/jit_note.c:
* libguile/lightning/lib/jit_print.c:
* libguile/lightning/lib/jit_rewind.c:
* libguile/lightning/lib/jit_size.c:
* libguile/lightning/lib/lightning.c: Define DEBUG to 1.

libguile/lightning/configure.ac

@@ -2,17 +2,6 @@ LIGHTNING_CFLAGS=
 
 AC_CHECK_FUNCS(mremap ffsl isnan isinf,,)
 
-AC_ARG_ENABLE(assertions,
-	      AS_HELP_STRING([--enable-assertions],
-			     [Enable runtime code generation assertions]),
-	      [DEBUG=$enableval], [DEBUG=auto])
-if test "x$DEBUG" = xyes; then
-    LIGHTNING_CFLAGS="$LIGHTNING_CFLAGS -DDEBUG=1"
-else
-    LIGHTNING_CFLAGS="$LIGHTNING_CFLAGS -DNDEBUG"
-    DEBUG=no
-fi
-
 case "$host_os" in
     *bsd*|osf*)		SHLIB=""	;;
     *hpux*)		SHLIB="-ldld"	;;

libguile/lightning/lib/jit_memory.c

@@ -17,6 +17,7 @@
  *	Paulo Cesar Pereira de Andrade
  */
 
+#define DEBUG 1
 #define DISASSEMBLER 0
 
 #include <lightning.h>

libguile/lightning/lib/jit_note.c

@@ -17,6 +17,7 @@
  *	Paulo Cesar Pereira de Andrade
  */
 
+#define DEBUG 1
 #define DISASSEMBLER 0
 
 #include <lightning.h>

libguile/lightning/lib/jit_print.c

@@ -17,6 +17,7 @@
  *	Paulo Cesar Pereira de Andrade
  */
 
+#define DEBUG 1
 #define DISASSEMBLER 0
 
 #include <lightning.h>

libguile/lightning/lib/jit_rewind.c

@@ -17,6 +17,7 @@
  *	Paulo Cesar Pereira de Andrade
  */
 
+#define DEBUG 1
 #define DISASSEMBLER 0
 
 #include <lightning.h>

libguile/lightning/lib/jit_size.c

@@ -17,6 +17,7 @@
  *	Paulo Cesar Pereira de Andrade
  */
 
+#define DEBUG 1
 #define DISASSEMBLER 0
 
 #include <lightning.h>

libguile/lightning/lib/lightning.c

@@ -17,6 +17,7 @@
  *	Paulo Cesar Pereira de Andrade
  */
 
+#define DEBUG 1
 #define DISASSEMBLER 0
 #define DEVEL_DISASSEMBLER 0