Andrey Skvortsov <andrej.skvortzov@gmail.com> [Thu, 01 Jun 2017 14:37:14 +0300] rev 1686
disallow setting IEC location addresses for TIME, DATE, DT and TOD variables
Size of these types is not defined and depends on the implementation
(IEC 61131-3 2.3.1).
Andrey Skvortsov <andrej.skvortzov@gmail.com> [Tue, 30 May 2017 17:09:33 +0300] rev 1685
if there is no users matiec installation, then use system path to run iec2c
search for matiec libraries in system path as well
Closes #29