* Allow test framework to use cores/esp8266/Arduino.h directly
* fix wps debugging
* some more missing debug.h
* Hunt down debug.h and roll-back
TODO: rename it to something else... it is an internal header
* Move abs+round checks to test/device/test_sw
* Restore macros for C code
* fixup! Move abs+round checks to test/device/test_sw
* Fix bad c/p, actually try round with ints
* tweak c macros per review
* fix gcc-10 missing cerrno include
