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Date: 2015-11-09
Author: Sonny Jeon
Subject: Pin state reporting of all pins. Flash optimization.

- New pin state realtime reporting feature. Instead of `Lim:000` for
limit state reports, the new feature shows `Pin:000|0|0000`, or
something similar. The `|` delimited fields indicate xyz limits, probe,
and control pin states, where 0 is always not triggered, and 1 is
triggered. Invert masks ARE accounted for.
  Each field may be enabled or disabled via the `$10` status report
setting. The probe and control pin flags are bits 5 and 6, respectively.

- Remove the now deprecated `REPORT_CONTROL_PIN_STATE` option in
config.h

- The old limit pin reports `Lim:000` may be re-enabled by commenting
out `REPORT_ALL_PIN_STATES` in config.h.

- Incremented the version letter (v1.0c) to indicate the change in
reporting style.

- Replaced all bit_true_atomic and bit_false_atomic macros with
function calls. This saved a couple hundred bytes of flash.