Added some more new variables to the "new section":
 * sys.logdir
 * sys.piddir
(cherry picked from commit 6f9891f9274ab329b9f83150991052252362fb2c)
examples/readtcp.cf: adjust example URL

(cherry picked from commit daa8d3c38128bea08c1c130a3389eb98184364ac)
Add: Example for users promise type, used in docs

(cherry picked from commit 4e492cc8ddd918231b5f1ae3aa67a60962fad889)
Redmine#5776: pluck more edit_line bodies and adjust tests

(cherry picked from commit c6ec14c292327f8a690f79bf297340f1527a1629)

Conflicts:
	tests/acceptance/Makefile.am