#406 No indent for empty lines of console output of applications and libraries.

• Best to review per commit.
• No indent for empty lines of console output.
  • Both in app framework and in libraries.
  • Only for empty messages, not potentially-purposely blank messages.
  • Right-trim the prefix if the message is empty.
• Note that I don't right-trim just any line, as if a user wants to really print abc from a CIF model (just to mention an example), they should be able to, I think. This merge request just prevents indenting empty lines.
• Affects the following tools, for end users:
  • Multi-level synthesis (not an end user tool yet).
  • CIF controller properties checker.
  • Event-based toolset: language equivalence check + DFA minimization.

Addresses #406 (closed)