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

build/definitions.mk

@@ -383,5 +383,5 @@ TAGSFLAGS =								\
 	--if0=no							\
 	--langmap=c:.c.h.i						\
 	--line-directives=yes						\
-	--exclude=libc/nt/struct/imagefileheader.h			\
+	--exclude=libc/nt/struct/imagefileheader.internal.h		\
 	--exclude=libc/nt/struct/filesegmentelement.h

build/htags

@@ -59,13 +59,13 @@ set -- --regex-c='/^extern [^(]*(\*const \([^)]*\))(/\1/b' "$@"
 #   struct WorstSoftwareEver;
 set -- --regex-c='/^struct.*;$/uehocruehcroue/b' "$@"
 
-exec ${TAGS:-ctags}                                      \
-     -e                                                  \
-     --langmap=c:.c.h                                    \
-     --exclude=libc/nt/struct/imagefileheader.h          \
-     --exclude=libc/nt/struct/imageseparatedebugheader.h \
-     --exclude=libc/nt/struct/importobjectheader.h       \
-     --exclude=libc/nt/struct/nonpageddebuginfo.h        \
-     --exclude=libc/nt/struct/ansistring.h               \
-     --exclude=libc/nt/struct/filesegmentelement.h       \
+exec ${TAGS:-ctags}                                               \
+     -e                                                           \
+     --langmap=c:.c.h                                             \
+     --exclude=libc/nt/struct/imagefileheader.internal.h          \
+     --exclude=libc/nt/struct/imageseparatedebugheader.internal.h \
+     --exclude=libc/nt/struct/importobjectheader.h                \
+     --exclude=libc/nt/struct/nonpageddebuginfo.h                 \
+     --exclude=libc/nt/struct/ansistring.h                        \
+     --exclude=libc/nt/struct/filesegmentelement.h                \
      "$@"