Get Cosmopolitan into releasable state

A new rollup tool now exists for flattening out the headers in a way
that works better for our purposes than cpp. A lot of the API clutter
has been removed. APIs that aren't a sure thing in terms of general
recommendation are now marked internal.

There's now a smoke test for the amalgamation archive and gigantic
header file. So we can now guarantee you can use this project on the
easiest difficulty setting without the gigantic repository.

A website is being created, which is currently a work in progress:
https://justine.storage.googleapis.com/cosmopolitan/index.html

libc/calls/calls.h

@@ -226,7 +226,6 @@ uint32_t getsid(int) nosideeffect;
 uint32_t gettid(void) nosideeffect;
 uint32_t getuid(void) nosideeffect;
 uint32_t umask(int32_t);
-void *getprocaddressmodule(const char *, const char *);
 
 #define getcwd(BUF, SIZE)                                          \
   (isconstant(BUF) && (&(BUF)[0] == NULL) ? get_current_dir_name() \