修复了大量存在的问题，增加了假鸭子类型等等机制

Test/VariadicTest/temp/_sha1_map.txt

@@ -1,9 +1,10 @@
-2953a7db4185005b:includes/viperlib.py
-377ad03e9b90ac39:main.py
-56cdd754a8a09347:includes/stdint.py
+49bd8cba55979f76:includes/stdint.py
 5a6a2137958c28c5:includes/w32\win32base.py
-6aee24fdefa3cbc0:includes/string.py
+70b580331b822117:includes/viperlib.py
 71e0a3ffcb3ebfad:includes/stdarg.py
 73edbcf76e32d00b:includes/stdio.py
+9dbecd0942a39782:includes/testcheck.py
+b5f1dc665c52a1bd:includes/string.py
 bbdf3bbd4c3bc28c:includes/w32\win32console.py
+c1416dfae155d6e2:main.py
 c9f4be41ca1cc2b4:includes/viperio.py