shared: Introduce new top-level dir and move 1st party lib code there.

This commit moves all first-party code developed for this project from lib/
to shared/, so that lib/ now only contains third-party code.

The following directories are moved as-is from lib to shared:

    lib/libc            -> shared/libc
    lib/memzip          -> shared/memzip
    lib/netutils        -> shared/netutils
    lib/timeutils       -> shared/timeutils
    lib/upytesthelper   -> shared/upytesthelper

All files in lib/embed/ have been moved to shared/libc/.

lib/mp-readline has been moved to shared/readline.

lib/utils has been moved to shared/runtime, with the exception of
lib/utils/printf.c which has been moved to shared/libc/printf.c.

Signed-off-by: Damien George <damien@micropython.org>

1 files changed, 0 insertions, 13 deletions

diff --git a/lib/embed/__errno.c b/lib/embed/__errno.c
deleted file mode 100644
index 86417a02d..000000000
--- a/lib/embed/__errno.c
+++ /dev/null
@@ -1,13 +0,0 @@
-// This file provides a version of __errno() for embedded systems that do not have one.
-// This function is needed for expressions of the form: &errno
-
-static int embed_errno;
-
-#if defined(__linux__)
-int *__errno_location(void)
-#else
-int *__errno(void)
-#endif
-{
-    return &embed_errno;
-}