Wiimms ISO Tools v3.00a r7387

- At the beginning of Wiimms-SZS-Tools I extraced the universal usable source code from Wiimms-ISO-Tools and created an independent C source code library called »dcLib«. I use this dcLib also for some other projects like mkw-ana, Wiimmfi, XDump and some more private projects. Now I inserted the expanded and more functional dcLib back into Wiimms-ISO-Tools and removed old WIT specific functions and members with same name or functionality. The great advantage is the easier management of the shared sources. The adapted code works fine with at least one issue: The error codes (numbers, not names) changed. If you used »wit error« to translate numbers to messages, you'll not have any problems.
- New options: --color[=mode], --256-colors, --no-colors: Define the color mode of the tools. If a command is prefixed by 'C-', then --color=ON is used implicitly as default. By default, the color support is only enabled for terminals. However, commands have to be recoded to support colors.
- List of commands with color support:
  - HELP (complete help system)
  - wit ID6 + ID8 (highlight unusal IDs)
  - wwt SPACE
- Bug fix: When extracting GameCube images, »fst.bin« was 4 times too large.
- Some minor fixes.
- Windows only: Cygwin update to v2.8.1, 2017-07-03.
- Apple Mac is no longer supported because I no longer have access to a Mac.