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/alg/reverse.h

@@ -3,16 +3,14 @@
 #include "libc/bits/xchg.h"
 #if !(__ASSEMBLER__ + __LINKER__ + 0)
 
-#if 0
 /**
  * Reverses array.
  *
- * @param ARRAY is a typed array or a pointer to one 
+ * @param ARRAY is a typed array or a pointer to one
  * @param COUNT is the number of items
  * @return pointer to start of array
  * @see ARRAYLEN()
  */
-#endif
 #define reverse(ARRAY, COUNT)              \
   ({                                       \
     autotype(&(ARRAY)[0]) Array = (ARRAY); \