patch #1493701: performance enhancements for struct module

Misc/NEWS

@@ -45,6 +45,8 @@ Core and builtins
 Extension Modules
 -----------------
 
+- Patch #1493701: performance enhancements for struct module.
+
 - Patch #1490224: time.altzone is now set correctly on Cygwin.
 
 - Patch #1435422: zlib's compress and decompress objects now have a

Modules/Setup.dist

@@ -167,7 +167,7 @@ GLHACK=-Dclear=__GLclear
 #array arraymodule.c	# array objects
 #cmath cmathmodule.c # -lm # complex math library functions
 #math mathmodule.c # -lm # math library functions, e.g. sin()
-#struct structmodule.c	# binary structure packing/unpacking
+#_struct _struct.c	# binary structure packing/unpacking
 #time timemodule.c # -lm # time operations and variables
 #operator operator.c	# operator.add() and similar goodies
 #_weakref _weakref.c	# basic weak reference support

setup.py

@@ -1444,7 +1444,7 @@ def main():
                       'install_lib':PyBuildInstallLib},
           # The struct module is defined here, because build_ext won't be
           # called unless there's at least one extension module defined.
-          ext_modules=[Extension('struct', ['structmodule.c'])],
+          ext_modules=[Extension('_struct', ['_struct.c'])],
 
           # Scripts to install
           scripts = ['Tools/scripts/pydoc', 'Tools/scripts/idle',