`v7_mk_undefined()` and `v7_mk_null()` are left unchanged, but marked
deprecated, and `V7_UNDEFINED` and `V7_NULL` are public now.
Xtensa code size with instrumentation: 590400 -> 590432, i.e. 32 bytes.
Xtensa code size without instrumentation: 530848 -> 531760, i.e. 912
bytes.
As objdump reveals, inside v7.c, `v7_mk_number` and others are inlined,
so the extra v7 argument is eliminated; outside of v7.c it's obviously
not inlined.
----
Also, v7_get_int() is added, which currently just casts stored double
value to int
PUBLISHED_FROM=e984b7308faf2380b3de388f238e0fae0aea545d
It would be probably good idea to also remove tools/docgen.py and
asciidoc.mk, but asciidoc.mk is still mentioned under `cloud/doc`, which
may contain some useful info which we'll need at least to review before
removing.
PUBLISHED_FROM=faf454d4c52a2f07ea8ac084cf0bd11a0c9c9b3b
Until I read the doc and find how to limit the retention,
otherwise it just eats all my ram and cpu and things start to fall
apart.
PUBLISHED_FROM=eb33fb44736f07b992270689217aca4af70513ff
