FMSLogo Code

Add missing LOCAL calls to fix leaked global variables

Cleanup: Remove input_blocking and iblk_buf
These variables and the related logic aren't needed in FMSLogo, since it doesn't read from stdin.

Update the expected test results with a recent test pass of a pre-release 8.2.0.

Fix Bug #573; Don't allow multiple "Single Step" dialog boxes

This fixes a problem where a callback instruction lists (such as ones run by SETTIMER) could pop up a single-step dialog boxes after than they could be closed, causing the user to lose control of FMSLogo if they pressed the "Step" button while a timer event with a short period was active.

Update a bug reference in a comment to match bug renumbering done by SourceForge

Fix bug 572 ("manera parecido" -> "manera parecida")

Join a sentence onto the same line.

Correct the error message shown in the example for ERASEFILE to match what FMSLogo 8.2.0 throws.

Document ?. Now that # is documented, it doesn't make sense to document # but not ?.

Fix grammar error: de iteración -> de la iteración