This completes non-automatic interning of strings in the parser, so that
doc strings don't take up RAM.  It complicates the parser and compiler,
and bloats stmhal by about 300 bytes.  It's complicated because now
there are 2 kinds of parse-nodes that can be strings: interned leaves
and non-interned structs.

Merge branch 'keep-strings-uninterned' of github.com:pfalcon/micropython into pfalcon-keep-strings-uninterned

Conflicts:
	py/parse.c

This means that complete slice operations are supported for lists (but not
for bytearray's and array.array's).

Older int-only encoding is not expressive enough to support arbitrary slice
assignment operations.

Addresses issue #598.

Now of the form MICROPY_PY_*.  See issue #35.

.makefile() should allow to specify which stream time to create - byte
or text.

Caveat is that __new__ should recurse to base class __new__, and ultimately,
object.__new__ is what handles instance allocation.

MP_ALLOC_* -> MICROPY_ALLOC_*
MICROPY_PATH_MAX -> MICROPY_ALLOC_PATH_MAX
MICROPY_ENABLE_REPL_HELPERS -> MICROPY_HELPER_REPL
MICROPY_ENABLE_LEXER_UNIX -> MICROPY_HELPER_LEXER_UNIX
MICROPY_EXTRA_* -> MICROPY_PORT_*

See issue #35.

Also, define object.__init__() (semantically empty, purely CPython compat
measure). Addresses #520.

Allow compilation of unix port under clang on OS X

See issue #608 for justification.

windows: Fix compilation with mingw-w64 so it uses correct printf implem...

Without this flag, mingw-w64 uses the MS implementations of snpintf and the likes.
This is not really a problem since they work with the the fixes provided for msvc,
but due to the way mingw-w64's stdio.h is structured we cannot get it to use the fixes.

io.FileIO is binary I/O, ans actually optional. Default file type is
io.TextIOWrapper, which provides str results. CPython3 explicitly describes
io.TextIOWrapper as buffered I/O, but we don't have buffering support yet
anyway.

Now case of subclassing tuple works, and list is broken, see comments.

Now schedule is: for native types, we call ->make_new() C-level method, which
should perform actions of __new__ and __init__ (note that this is not
compliant, but is efficient), but for user types, __new__ and __init__ are
called as expected.

Also, make sure we convert scalar attribute value to a bound-pair tight in
mp_obj_class_lookup() method, which avoids converting it again and again in
its callers.

Addresses issue #617.

Jump to bootloader

Signed-off-by: Sven Wegener <sven.wegener@stealer.net>

Signed-off-by: Sven Wegener <sven.wegener@stealer.net>

py: Fix mp_obj_t -> mp_const_obj_t for mp_obj_int_get_checked()

Signed-off-by: Sven Wegener <sven.wegener@stealer.net>