More fixes for building MacPython extension modules. It now actually succeeds

in building various modules.

setup.py

@@ -309,6 +309,7 @@ class PyBuildExt(build_ext):
 
         # fcntl(2) and ioctl(2)
         exts.append( Extension('fcntl', ['fcntlmodule.c']) )
+        if platform not in ['mac']:
                 # pwd(3)
                 exts.append( Extension('pwd', ['pwdmodule.c']) )
                 # grp(3)
@@ -338,12 +339,13 @@ class PyBuildExt(build_ext):
         exts.append( Extension('cPickle', ['cPickle.c']) )
 
         # Memory-mapped files (also works on Win32).
-        if platform not in ['atheos']:
+        if platform not in ['atheos', 'mac']:
             exts.append( Extension('mmap', ['mmapmodule.c']) )
 
         # Lance Ellinghaus's modules:
         # enigma-inspired encryption
         exts.append( Extension('rotor', ['rotormodule.c']) )
+        if platform not in ['mac']:
                 # syslog daemon interface
                 exts.append( Extension('syslog', ['syslogmodule.c']) )
 
@@ -381,7 +383,7 @@ class PyBuildExt(build_ext):
             exts.append( Extension('readline', ['readline.c'],
                                    library_dirs=['/usr/lib/termcap'],
                                    libraries=readline_libs) )
-
+        if platform not in ['mac']:
                 # crypt module.
         
                 if self.compiler.find_library_file(lib_dirs, 'crypt'):
@@ -535,7 +537,7 @@ class PyBuildExt(build_ext):
             dblib_dir = None
 
         # The standard Unix dbm module:
-        if platform not in ['cygwin']:
+        if platform not in ['cygwin', 'mac']:
             if (self.compiler.find_library_file(lib_dirs, 'ndbm')):
                 exts.append( Extension('dbm', ['dbmmodule.c'],
                                        libraries = ['ndbm'] ) )