fixes & cleanups

- tccgen.c/tcc.h: allow function declaration after use:
      int f() { return g(); }
      int g() { return 1; }
  may be a warning but not an error
  see also 76cb1144ef

- tccgen.c: redundant code related to inline functions removed
  (functions used anywhere have sym->c set automatically)

- tccgen.c: make 32bit llop non-equal test portable
  (probably not on C67)

- dynarray_add: change prototype to possibly avoid aliasing
  problems or at least warnings

- lib/alloca*.S: ".section .note.GNU-stack,"",%progbits" removed
  (has no effect)

- tccpe: set SizeOfCode field (for correct upx decompression)

- libtcc.c: fixed alternative -run invocation
      tcc "-run -lxxx ..." file.c
  (meant to load the library after file).
  Also supported now:
      tcc files ... options ... -run @ arguments ...

tccpp.c

@@ -1566,7 +1566,7 @@ static CachedInclude *search_cached_include(TCCState *s1, const char *filename,
     e = tcc_malloc(sizeof(CachedInclude) + strlen(filename));
     strcpy(e->filename, filename);
     e->ifndef_macro = e->once = 0;
-    dynarray_add((void ***)&s1->cached_includes, &s1->nb_cached_includes, e);
+    dynarray_add(&s1->cached_includes, &s1->nb_cached_includes, e);
     /* add in hash table */
     e->hash_next = s1->cached_includes_hash[h];
     s1->cached_includes_hash[h] = s1->nb_cached_includes;
@@ -1665,7 +1665,7 @@ static void pragma_parse(TCCState *s1)
         if (tok != TOK_STR)
             goto pragma_err;
         file = tcc_strdup((char *)tokc.str.data);
-        dynarray_add((void ***)&s1->pragma_libs, &s1->nb_pragma_libs, file);
+        dynarray_add(&s1->pragma_libs, &s1->nb_pragma_libs, file);
         next();
         if (tok != ')')
             goto pragma_err;
@@ -1820,7 +1820,7 @@ ST_FUNC void preprocess(int is_bof)
             printf("%s: including %s\n", file->prev->filename, file->filename);
 #endif
             /* update target deps */
-            dynarray_add((void ***)&s1->target_deps, &s1->nb_target_deps,
+            dynarray_add(&s1->target_deps, &s1->nb_target_deps,
                     tcc_strdup(buf1));
             /* push current file in stack */
             ++s1->include_stack_ptr;