will follow up with more helpers to simplify code

thanks to blended for the help testing

using cmsgpack_safe by antirez (same as used in redis)

new line suggested by @puria since sed is different on OSX

Much less repetition across makefiles, matching parts of targets with
settings in build/config.mk. Some build target names have changed.

milagro library is now version 4.12.0 and includes new curves, we
build ECDH also for the SECP256K1 which is used by bitcoin and
derivates.

breakout functions from init.lua into separated internal LUA libraries
to facilitate maintainance, also fixed big creation from integer
numbers.

another facility to ease clarity of code, instantiate global hasher
objects so that callers just need to use the sha*() functions.

now globals random(len) and zero(len) are there to speed up the
creation of variable size arrays filled with zero or random values

hides FP2 complexity and reduces needs for methods if compared to the
ECP implementation.

methods are context free, if we want meaningful completions on
instanced classes then we need deeper inspection in the type