Move tcc 0.9.27 after bzip2.

This also allows to merge two builds of tcc 0.9.27.
Drop tcc 0.9.27 git submodule.

sysa/tcc-0.9.27/patches/mes-libc-qsort.patch

@@ -1,28 +0,0 @@
-SPDX-FileCopyrightText: 2021 Paul Dersey <pdersey@gmail.com>
-
-SPDX-License-Identifier: LGPL-2.0-or-later
-
-Reimplement qswap in a more correct manner that works much more cleanly and
-with larger string sizes.
-
---- lib/stdlib/qsort.c
-+++ lib/stdlib/qsort.c
-@@ -24,10 +25,14 @@
- void
- qswap (void *a, void *b, size_t size)
- {
--  char *buf[8];
--  memcpy (buf, a, size);
--  memcpy (a, b, size);
--  memcpy (b, buf, size);
-+  char *pa = a;
-+  char *pb = b;
-+  do
-+  {
-+    char tmp = *pa;
-+    *pa++ = *pb;
-+    *pb++ = tmp;
-+  } while (--size > 0);
- }
- 
- size_t