Usually posix functions have individual doc pages, and each header has its own
list of required macro definitions. Use a simpler key of "in-latest-posix" to
signal that the URL convention can be followed.
Add support for a "removed-in-posix-2008" key which will link to the 2004 docs
for functions like bcmp, bcopy, bzero, index, and rindex from strings.h.
I don't want to add all of these links for pthreads.h, so automating this will
make documenting these go much faster.
bcmp, bcopy, and bzero should be moved from libc/src/string/ to
lib/src/strings/ in order for docgen to use existing conventions to find
whether we implement a function or not.
We should add support to docgen for mentioning glibc extensions (mempcpy) or
extensions from other libcs.
[libc][docs] stub out assert, errno, and locale
These were the remaining c89 library headers (besides string.h and
stdlib.h; I
will split strings.rst in a follow up commit).
The macro support detection in docgen doesn't quite work for some of
these
headers. Add the stubs for these headers for now, and fix up docgen
later.
See the "NIST publication":
Link: https://www.open-std.org/jtc1/sc22/wg14/www/projects.html
This commit does a few things:
* creates libc/docs/headers/ and moves all user API related headers under it.
* updates paths and docgen
* updates the top level index to put these headers under a new "Implementation
Status" tab.
* rename some of the files to be foo.rst for foo.h (except strings, which is
currently a mix of string.h and stdlib.h)
* update the heading of some files to be in the form foo.h.
