Rewrite all the integer math operations with const input parameters to
use PROGMEM properly (pgm_read_xx or memcpy_P), and move all the EC
order and generators and SHA OIDs to PROGMEM.
This frees around 1.2KB of heap for any SSL applications.
Also delete unneeded objects from the bearssl.a library to shrink the
GIT repo size.
* WIP compile examples on host with 'make examples'
* WIP bufferize tcp input
* WIP Makefile
* WIP network to rework, tcp/udp to factorize, udp addresses broken
* minor changes to the core
* WIP basic udp working
* WIP mdns
* WIP mcast receiving, not sending
* WIP mdns OK
* beta version
* SSL + doc
* update travis host test command
* licenses
* typo
* doc: arduino builder is not around: declare functions before calling them
* fix with latest SSL PR, compile in 32 bits mode
* fix make clean
* make -m32 optional
* 32bits compiler ability tester
* WIP
* WIP (fix 1 vtable error, still another one to hunt with using spiffs)
* example astyle
* fix os_printf_plus
* load / save mock spiffs
* fix style
* fix using spiffs/mock
* don't mess ram
* update doc
* remove leftover
* optimization -Os except for CI, rename ARCH32 to FORCE32
* revert useless cast (not even compiled)
* remove unused function
* use proper type for pointer arithmetics
* makefile: sketch object and cpp file moved to bin/ directories
easier to clean, and IDE don't like them
* changes for review
* make use of %zd
* less verbose makefile by default (option)
* update readme
