Windows:  2.1a1 changes so Python runs again.  Note that the python20
subproject is gone, replaced by the new pythoncore subproject.
diff --git a/PC/config.h b/PC/config.h
index 9b2f918..65d390a 100644
--- a/PC/config.h
+++ b/PC/config.h
@@ -327,9 +327,9 @@
    more (other compilers will still need to do so, but that's taken care
    of by the Distutils, so it's not a problem). */
 #ifdef _DEBUG
-#pragma comment(lib,"python20_d.lib")
+#pragma comment(lib,"python21_d.lib")
 #else
-#pragma comment(lib,"python20.lib")
+#pragma comment(lib,"python21.lib")
 #endif
 #endif /* USE_DL_EXPORT */
 
diff --git a/PC/example_nt/readme.txt b/PC/example_nt/readme.txt
index e38185a..66dbea0 100644
--- a/PC/example_nt/readme.txt
+++ b/PC/example_nt/readme.txt
@@ -144,11 +144,11 @@
 Now you need to add some mode-specific settings:

 

 Select "Win32 Release" in the "Settings for:" dropdown list.  Click the

-"Link" tab, choose the "Input" Category, and append "python20.lib" to the

+"Link" tab, choose the "Input" Category, and append "python21.lib" to the

 list in the "Object/library modules:" box.

 

 Select "Win32 Debug" in the "Settings for:" dropdown list, and append

-"python20_d.lib" to the list in the "Object/library modules:" box.  Then

+"python21_d.lib" to the list in the "Object/library modules:" box.  Then

 click on the C/C++ tab, select "Code Generation" from the "Category:"

 dropdown list, and select "Debug Multithreaded DLL" from the "Use run-time

 library:" dropdown list.

diff --git a/PC/python_nt.rc b/PC/python_nt.rc
index 76ec975..4554411b 100644
--- a/PC/python_nt.rc
+++ b/PC/python_nt.rc
@@ -13,7 +13,7 @@
 #define PYTHON_VERSION MS_DLL_ID "." PYTHON_API_STRING "\0"
 
 #ifndef PYTHON_DLL_NAME
-#define PYTHON_DLL_NAME "Python20.dll"
+#define PYTHON_DLL_NAME "Python21.dll"
 #endif
 
 // String Tables