Fix oversight in the bootstrap procedure

Stage 0 is supposed to emit compiled versions of system.scm and
compiler.scm. The compiler.scm bytecode wasn't emitted properly
because the emitter put the two files' bytecode in two separate C
variables instead of concatenating them into the same variable as they
should be.

scheme-core/dump.scm

@@ -1,6 +1,9 @@
-(define (dump-buffer-as-c-literal buf)
+(define (dump-buffers-as-c-literal . bufs)
   (princ "char boot_image[] = \"")
-  (let next ((i 0))
+  (let loop-bufs ((bufs bufs))
+    (if (not (null? bufs))
+        (begin (let ((buf (car bufs)))
+                 (let loop-buf-bytes ((i 0))
                    (let ((char (read-u8 buf)))
                      (if (not (io.eof? buf))
                          (let ((code (+ char 0)))
@@ -8,5 +11,6 @@
                            (princ "\\x")
                            (if (< code #x10) (princ "0"))
                            (princ (number->string code 16))
-            (next (+ i 1))))))
+                           (loop-buf-bytes (+ i 1)))))))
+               (loop-bufs (cdr bufs)))))
   (princ "\";\n"))

scheme-core/mkboot0.scm

@@ -19,6 +19,6 @@
     (io.seek out 0)
     out))
 
-(for-each (lambda (file)
-            (dump-buffer-as-c-literal (compile-file->buffer file)))
-          (cdr *argv*))
+(dump-buffers-as-c-literal
+ (compile-file->buffer "system.scm")
+ (compile-file->buffer "compiler.scm"))

scheme-core/mkboot1.scm

@@ -4,4 +4,4 @@
 (load "compiler.scm")
 (load "dump.scm")
 
-(dump-buffer-as-c-literal (system-image->buffer))
+(dump-buffers-as-c-literal (system-image->buffer))

scripts/build.sh

@@ -113,8 +113,7 @@ cd ../scheme-core
 echo "Entering directory '$PWD'"
 echo "Creating stage 0 boot file..."
 set -x
-../"$builddir"/upscheme mkboot0.scm system.scm compiler.scm \
-   >../scheme-boot/boot_image.h.new
+../"$builddir"/upscheme mkboot0.scm >../scheme-boot/boot_image.h.new
 mv ../scheme-boot/boot_image.h.new ../scheme-boot/boot_image.h
 
 { set +x; } 2>/dev/null
@@ -129,8 +128,7 @@ cd ../scheme-core
 echo "Entering directory '$PWD'"
 echo "Creating stage 1 boot file..."
 set -x
-../"$builddir"/upscheme mkboot1.scm \
-   >../scheme-boot/boot_image.h.new
+../"$builddir"/upscheme mkboot1.scm >../scheme-boot/boot_image.h.new
 mv ../scheme-boot/boot_image.h.new ../scheme-boot/boot_image.h
 
 { set +x; } 2>/dev/null