update documentation of options preprocessing
fixed handling of ARG_ARRAY_SUFFIX

Renaming of list arguments failed for arguments enclosed in angle
brackets (e.g. '<arg>').
completed list and show commands of software scripts
fixed handling of -v option

Verbosity modification by passing -v parameters did not work.
fixed passing of options dictionary to check_result()

Check result now receives options dictionary modified by
transform_options().
accept a tuple from check_result()

check_result() method can now return a tuple with passed_flag and error
description, that provides user more information
extended software scripts

Added install and remove sub-commands.