Added build config to get python.com

Modules/Setup and Modules/Setup.local contain the build recipes for
various extensions, wrote a custom script to translate them for
python.mk. Modules/config.c needs to be changed if any extensions are
removed or added.

Most of the source modifications are for missing headers or compile time
build vars like ABIFLAGS.

Created separate mk files for the C extensions and the Python stdlib.
Can use find for adding the python files to the APE ZIP store, but right
now necessary files are just hardcoded.

python.com loads but some build configs are still missing (showing 1 Jan
1970 as time of compilation).

third_party/python/Modules/socketmodule.c

@@ -265,7 +265,8 @@ http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/net/getaddrinfo.c.diff?r1=1.82&
 #endif
 
 #define HAVE_INET_PTON
-#include <netdb.h>
+#include "libc/sock/sock.h"
+#include "libc/dns/dns.h"
 #endif
 
 /* Irix 6.5 fails to define this variable at all. This is needed
@@ -297,9 +298,24 @@ http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/net/getaddrinfo.c.diff?r1=1.82&
 #ifndef MS_WINDOWS
 
 /* Non-MS WINDOWS includes */
-# include <netdb.h>
+#include "libc/sock/sock.h"
+#include "libc/sysv/consts/af.h"
+#include "libc/sysv/consts/sock.h"
+#include "libc/sysv/consts/inaddr.h"
+#include "libc/sysv/consts/sol.h"
+#include "libc/sysv/consts/so.h"
+#include "libc/dns/dns.h"
+#include "libc/dns/ent.h"
 # include <unistd.h>
 
+#ifdef AF_NETLINK
+#undef AF_NETLINK
+#endif
+
+#ifdef AF_CAN
+#undef AF_CAN
+#endif
+
 /* Headers needed for inet_ntoa() and inet_addr() */
 #   include <arpa/inet.h>