programmer: ruby 1.9 compat
programmer: device connection debug
examples/serial-loopback: keep reading data
baud rate parameter
toolchain: replaced CTASSERT magic with C11 _Static_assert
toolchain: add .mchckrc support

The .mchckrc file can store common settings, such as SATDIR or
MCHCKADAPTER.  Use ?= assignment to allow temporary overrides, e.g.:

MCHCKADAPTER?=	name=mchck:dev=/dev/serial/by-id/usb-mchck.org_MC_HCK_SWD_adapter-if00
toolchain: add swd-flash make target
toolchain: start gdbserver on `make gdb'
gdbserver: ignore INT when running gdb
hardware: generate versioned zip and add to fab
fab outputs from 097404b hardware: generate versioned zip and add to fab