Remove AtheOS support, as per PEP 11 (which claims that all code was removed in Python 3.0).

command/build_ext.py

@@ -262,9 +262,9 @@ class build_ext(Command):
         if os.name == 'os2':
             self.library_dirs.append(os.path.join(sys.exec_prefix, 'Config'))
 
-        # for extensions under Cygwin and AtheOS Python's library directory must be
+        # for extensions under Cygwin Python's library directory must be
         # appended to library_dirs
-        if sys.platform[:6] == 'cygwin' or sys.platform[:6] == 'atheos':
+        if sys.platform[:6] == 'cygwin':
             if sys.executable.startswith(os.path.join(sys.exec_prefix, "bin")):
                 # building third party extensions
                 self.library_dirs.append(os.path.join(sys.prefix, "lib",
@@ -776,22 +776,6 @@ class build_ext(Command):
             # don't extend ext.libraries, it may be shared with other
             # extensions, it is a reference to the original list
             return ext.libraries + [pythonlib]
-        elif sys.platform[:6] == "atheos":
-            from distutils import sysconfig
-
-            template = "python%d.%d"
-            pythonlib = (template %
-                   (sys.hexversion >> 24, (sys.hexversion >> 16) & 0xff))
-            # Get SHLIBS from Makefile
-            extra = []
-            for lib in sysconfig.get_config_var('SHLIBS').split():
-                if lib.startswith('-l'):
-                    extra.append(lib[2:])
-                else:
-                    extra.append(lib)
-            # don't extend ext.libraries, it may be shared with other
-            # extensions, it is a reference to the original list
-            return ext.libraries + [pythonlib, "m"] + extra
         elif sys.platform == 'darwin':
             # Don't use the default code below
             return ext.libraries