Since the errno module is needed by os._execvpe(), and that is used by the

setup.py (indirectly) script to build the standard dynamically loaded
modules, the errno module is being made static so it will always be
available.
Closes SF bug #591205 (needed on trunk only).

Modules/Setup.dist

@@ -109,6 +109,7 @@ PYTHONPATH=$(COREPYTHONPATH)
 # setup.py script in the root of the Python source tree.
 
 posix posixmodule.c		# posix (UNIX) system calls
+errno errnomodule.c		# posix (UNIX) errno values
 _sre _sre.c			# Fredrik Lundh's new regular expressions
 
 # The rest of the modules listed in this file are all commented out by
@@ -177,7 +178,6 @@ GLHACK=-Dclear=__GLclear
 #fcntl fcntlmodule.c	# fcntl(2) and ioctl(2)
 #pwd pwdmodule.c		# pwd(3) 
 #grp grpmodule.c		# grp(3)
-#errno errnomodule.c	# posix (UNIX) errno values
 #select selectmodule.c	# select(2); not on ancient System V
 
 # Memory-mapped files (also works on Win32).

setup.py

@@ -315,8 +315,6 @@ class PyBuildExt(build_ext):
                 exts.append( Extension('pwd', ['pwdmodule.c']) )
                 # grp(3)
                 exts.append( Extension('grp', ['grpmodule.c']) )
-        # posix (UNIX) errno values
-        exts.append( Extension('errno', ['errnomodule.c']) )
         # select(2); not on ancient System V
         exts.append( Extension('select', ['selectmodule.c']) )