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/fmt/pflink.h

@@ -1,8 +1,8 @@
 #ifndef COSMOPOLITAN_LIBC_FMT_PFLINK_H_
 #define COSMOPOLITAN_LIBC_FMT_PFLINK_H_
+#include "libc/dce.h"
 #if !(__ASSEMBLER__ + __LINKER__ + 0)
 #ifndef __STRICT_ANSI__
-#include "libc/dce.h"
 
 /**
  * @fileoverview builtin+preprocessor+linker tricks for printf/scanf.
@@ -37,7 +37,7 @@
       STATIC_YOINK("malloc");          \
       STATIC_YOINK("calloc");          \
       STATIC_YOINK("free_s");          \
-      STATIC_YOINK("grow");            \
+      STATIC_YOINK("__grow");          \
     }                                  \
     FMT;                               \
   })