tools/mklibs: update to 0.1.45

Refresh 2to3 patch. Upstream partially did this against some older
python version. This is still needed.

Refreshed other patches to be python3 safe.

Remove uClibc patches as only musl is present now.

Refresh others.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

tools/mklibs/patches/005-duplicate_syms.patch

@@ -23,7 +23,7 @@
      for name in needed_symbols:
 -        if not name in symbol_provider:
 -            if not needed_symbols[name].weak:
--                print "WARNING: Unresolvable symbol %s" % name
+-                print("WARNING: Unresolvable symbol %s" % name)
 -        else:
 -            lib = symbol_provider[name]
 -            library_symbols_used[lib].add(library_symbols[lib][name])