Revert "bootstrappable: vstack."

This reverts commit 2fc3784892.

doit

@@ -33,12 +33,9 @@ MESCC=${MESCC-../mes/pre-inst-env mescc}
 GUILE_LOAD_PATH=nyacc
 
 MES_DEBUG=2
-MES_PREFIX=${MES_PREFIX-../mes}
+MES_PREFIX=../mes
 TINYCC_SEED=${TINYCC_SEED-../tinycc-seed}
 
-rm -f mes
-ln -sf $MES_PREFIX mes
-
 if [ -z "$interpreter" -a -n "$GUIX" ]; then
     interpreter=$($GUIX environment --ad-hoc patchelf -- patchelf --print-interpreter $(guix build --system=i686-linux hello)/bin/hello)
 elif [ -x /lib/ld-linux.so.2 ]; then

tcc.c

@@ -251,10 +251,6 @@ int main(int argc, char **argv)
     unsigned start_time = 0;
     const char *first_file;
 
-#if BOOTSTRAP //MESC bug
-    vstack = &__vstack[1];
-#endif
-
 redo:
     s = tcc_new();
     opt = tcc_parse_args(s, &argc, &argv, 1);

tcc.h

@@ -1285,15 +1285,7 @@ ST_DATA Sym *global_label_stack;
 ST_DATA Sym *define_stack;
 ST_DATA CType char_pointer_type, func_old_type, int_type, size_type;
 ST_DATA SValue __vstack[1+/*to make bcheck happy*/ VSTACK_SIZE], *vtop, *pvtop;
-#if BOOTSTRAP
-#if __MESC__
-SValue *vstack;
-#else
-extern SValue *vstack;
-#endif
-#else
-#define vstack (__vstack + 1)
-#endif
+#define vstack  (__vstack + 1)
 ST_DATA int rsym, anon_sym, ind, loc;
 
 ST_DATA int const_wanted; /* true if constant wanted */

tccgen.c

@@ -30,9 +30,6 @@
    rsym: return symbol
    anon_sym: anonymous symbol index
 */
-#if BOOTSTRAP //MESC
-SValue *vstack;
-#endif
 ST_DATA int rsym, anon_sym, ind, loc;
 
 ST_DATA Sym *sym_free_first;