gpiochip API 2 incorporating new timestamp clock

Changes forced by the adoption of a different timestamp clock in gpiochip API 2.

The gpiochip changes broke the operation of GPIO debounce and watchdogs.

gpiochip API 2

Changes forced by the adoption of gpiochip API 2.

The gpiochip changes broke the earlier lg version which used gpiochip API 1.

API change

Changed lgErrStr to lguErrorText
Changed notify pipes from lgd-nfyx to .lgd-nfyx
Altered list of commands which may be executed by scripts.

Initial release

v0.0

v0.0