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/termios.internal.h

@@ -0,0 +1,30 @@
+#ifndef COSMOPOLITAN_LIBC_CALLS_TERMIOS_INTERNAL_H_
+#define COSMOPOLITAN_LIBC_CALLS_TERMIOS_INTERNAL_H_
+#ifndef __STRICT_ANSI__
+#include "libc/bits/safemacros.internal.h"
+#include "libc/calls/struct/metatermios.internal.h"
+#include "libc/calls/struct/termios.h"
+#include "libc/str/str.h"
+#if !(__ASSEMBLER__ + __LINKER__ + 0)
+COSMOPOLITAN_C_START_
+
+#define COPY_TERMIOS(TO, FROM)                             \
+  do {                                                     \
+    memset((TO), 0, sizeof(*(TO)));                        \
+    (TO)->c_iflag = (FROM)->c_iflag;                       \
+    (TO)->c_oflag = (FROM)->c_oflag;                       \
+    (TO)->c_cflag = (FROM)->c_cflag;                       \
+    (TO)->c_lflag = (FROM)->c_lflag;                       \
+    memcpy((TO)->c_cc, (FROM)->c_cc,                       \
+           min(sizeof((TO)->c_cc), sizeof((FROM)->c_cc))); \
+    (TO)->c_ispeed = (FROM)->c_ispeed;                     \
+    (TO)->c_ospeed = (FROM)->c_ospeed;                     \
+  } while (0)
+
+void *termios2host(union metatermios *, const struct termios *);
+void termios2linux(struct termios *, const union metatermios *);
+
+COSMOPOLITAN_C_END_
+#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
+#endif /* !ANSI */
+#endif /* COSMOPOLITAN_LIBC_CALLS_TERMIOS_INTERNAL_H_ */