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/str/tinymemmem.internal.h

@@ -0,0 +1,26 @@
+#ifndef COSMOPOLITAN_LIBC_STR_TINYSTRSTR_H_
+#define COSMOPOLITAN_LIBC_STR_TINYSTRSTR_H_
+#ifndef __STRICT_ANSI__
+#include "libc/str/str.h"
+#if !(__ASSEMBLER__ + __LINKER__ + 0)
+
+forceinline void *tinymemmemi(const void *haystk, size_t haystksize,
+                              const void *needle, size_t needlesize) {
+  const char *p = (const char *)haystk;
+  const char *pe = (const char *)haystk + haystksize;
+  while (p < pe) {
+    size_t i = 0;
+    ++p;
+    for (;;) {
+      ++i;
+      if (i > needlesize) return (/*unconst*/ char *)(p - 1);
+      if (p == pe) break;
+      if (((const char *)needle)[i - 1] != (p - 1)[i - 1]) break;
+    }
+  }
+  return (/*unconst*/ char *)(!haystksize && !needlesize ? haystk : NULL);
+}
+
+#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
+#endif /* !ANSI */
+#endif /* COSMOPOLITAN_LIBC_STR_TINYMEMMEM_H_ */