Add Disk ignore list, fix buffer overflow.

[vintagepc]

• Fix the buffer overflow for wide displays with long mount paths.
  • Closes #178
  • Supersedes #158
• Add an "ignore" list feature to the lcdproc config file for non-interesting mount points.
  • Closes #179

Up to 10 mountpoints can be ignored, but this limit can be adjusted by changing the appropriate #define and recompiling.

[vintagepc]

Thanks, will review and make the requested changes shortly.

I did think about separate feature/bugfixes and I can definitely understand the fix-only sentiment in a stability perspective (e.g. minimally invasive changes to reduce risk of breakage) but in this case there isn't really a "lite" version of just the bugfix shy of the array resize in the other open PR;

If you still prefer I do so then I will split them out (I'm the guest here, after all) but TBH given the scope of the changes it does feel a little like formality for the sake of formality because the bulk of the changes are for the cleanup/bugfix.

[haraldg]

As far as "easier to review" is concerned, the big difference is the new variables, that you introduce for the new feature. That makes matching the old code with the new code quite a bit harder.

You are right, that the merging of the two loops as part of the crash fix is quite invasive by itself. But IMO this is just more reason to two the change in to steps, as each one is non-trivial. (And this is even more true, when you add the changes to the user documentation.)

As lcdproc itself is a rather small project, many things might seem like a formality. Still I think it is worth following them as long as they don't cause too much extra work.

[vintagepc]

Closing because it has been superseded by #182 and #181